CBSE > Class 10 > Science | CBSE Board | Homework Help

Nearly 99 per cent of the filtrate formed after glomerular filtration has to be reabsorbed by the renal tubules. This process is called reabsorption. Though, this reabsorption takes place selectively allowing substances useful to be reabsorbed excluding those not needed by the body. Hence, it is called selective reabsorption. The tubular epithelial cells in different segments of nephron perform this either by active or passive mechanisms.

For example, substances like glucose, amino acids, Na+, etc., in the filtrate are reabsorbed actively.

0Thank You

ANSWER

What is the Longest name of carbon compound

Posted by Anukul Mishra 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Dolly Rawat 5 years, 2 months ago

Mam plz tell when we use magnification formula

0Thank You

Haridev Sudhan 5 years, 2 months ago

palytoxin and maitotoxin have been recognized as the longest carbon chain

1Thank You

ANSWER

Formula of reflection

Posted by Indrajeet Kumar 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Anukul Mishra 5 years, 2 months ago

0Thank You

Swathi Senthilkumar 5 years, 2 months ago

n = c / v

0Thank You

ANSWER

A compass needle is placed near a current carrying wire .state your observation for the following cases and give reason for the same in each case A) Magnitude of electric current in the wire is increased. B) the compass needle is displaced away from the wire

Posted by Nishu Solanki 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Harpreet Kaur 5 years, 2 months ago

(a) Deflection of compass needle increases : Magnetic field strength is directly proportional to the amount of current. (b) Deflection of compass needle decreases :Magnetic field strength is inversely proportional to the distance from wire.

0Thank You

ANSWER

What are the drawbacks of Mandeleev's periodic table?

Posted by Taniya 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Gaurav Seth 5 years, 2 months ago

Drawbacks of Mendeleev’s periodic table:
1. Position of hydrogen: Hydrogen is placed in group I. However, it resembles the elements of group I (alkali metals) as well as the elements of group VILA, (halogens). Therefore, the position of hydrogen in the periodic table is not correctly defined.
2. Anomalous pairs: In certain pairs of elements, the increasing order of atomic masses was not obeyed. In these cases, Mendeleev placed elements according to similarities in their properties and not in increasing order of their atomic masses. For example, argon (Ar, atomic mass 39.9) is placed before potassium (K, atomic mass 39.1). Similarly, cobalt (Co, atomic mass 58.9) is placed before nickel (Ni, atomic mass 58.6) and tellurium (Te, atomic mass 127.6) is placed before iodine (I, atomic mass 126.9). These positions were not justified.
3. Position of isotopes: Isotopes are the atoms of the same element having different atomic masses but same atomic number. Therefore, according to Mendeleev’s classification, these should be placed at different places depending upon their atomic masses. For example, isotopes of hydrogen with atomic masses 1,2 and 3 should be placed at three places. However, isotopes have not been given separate places in the periodic table.
4. Some similar elements are separated and dissimilar elements are grouped together: In the Mendeleev’s periodic table, some similar elements were placed in different groups while some dissimilar elements
had been grouped together. For example, copper and mercury resembled
in their properties but they had been placed in different groups. At the same time, elements of group IA such as Li, Na and K were grouped with copper (Cu), silver (Ag) and gold (Au), though their properties are quite different.
5. Cause of periodicity: Mendeleev did not explain the cause of periodicity among the elements.
6. Position of lanthanoids (or lanthanides) and actinoids (or actinides):
The fourteen elements following lanthanum (known as lanthanoids, from atomic number 58-71) and the fourteen elements following actinium (known as actinoids, from atomic number 90 – 103) have not been given separate places in Mendeleev’s table.
In order to cover more elements, Mendeleev modified his periodic table.

1Thank You

ANSWER

What is the advantages of Mandeleev's periodic table?

Posted by Taniya 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Preeti 5 years, 2 months ago

Mendeleev's periodic table had the following advantages: 1) He had left spaces in his periodic table for the then undiscovered elements 2) he had predicted the properties of the undiscovered elements 3) noble gases could be accomodate into the periodic table without disturbing the rest of elements.

1Thank You

Gaurav Seth 5 years, 2 months ago

1. He generalized the study of the elements then known as the study of a mere groups.

2. In Mendeleev’s periodic table, he left some blank spaces. These vacant spaces were left for including elements that were not discovered at that time.

3. Mendeleev could also predict the properties of these unknown elements, on the basis of the properties of the elements lying adjacent to these vacant spaces.

He predicted the presence of three elements. They were named as Eka boron, Eka-aluminium and Eka-silicon. The properties of these three elements were similar to the actual elements discovered later.

Eka-boron was similar to Scandium, Eka-aluminium was similar to Gallium and Eka-silicon was similar to Germanium.

4. When noble gases were discovered later, they could be accommodated in the periodic table in the form of a separate group without disturbing the positions of the other elements.

5. He was able to correct the values of the atomic masses of elements like gold and platinum, he placed these elements going strictly by the similarities in their properties.

0Thank You

ANSWER

Hi, I am using myCBSEguide mobile app for my studies. It helps me score high in exams. Download the app from https://mycbseguide.com/reward/appshare/?referral_code=MKD56705M and Enter this code - MKD56705M while signing up to earn 50 points as a referral bonus.

Posted by R Shiva Prasad Sharma 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

R Shiva Prasad Sharma 5 years, 2 months ago

I didn't get

0Thank You

Pallavi Thakur 5 years, 2 months ago

Okk

0Thank You

Jai Sharma 5 years, 2 months ago

Thanks I got 100 points

0Thank You

ANSWER

What is the term fossil

Posted by 33Neelesh Sv_ 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Honey Jain 5 years, 2 months ago

fossil (from Classical Latin: fossilis, literally "obtained by digging") is any preserved remains, impression, or trace of any once-living thing from a past geological age.

0Thank You

Yogita Ingle 5 years, 2 months ago

Fossils are preserved remains of living organisms from remote past.
Fossil mainly preserves only a portion of the dead organism (eg: skeleton, bone, teeth etc..)
Fossils may vary from microscopic (single bacterial cell) to dinosaurs.

0Thank You

ANSWER

When a small amount of acid is added to water which phenomena occur

Posted by Deepak Soni 5 years, 2 months ago

CBSE > Class 10 > Science

4 answers

A:) ‎ 5 years, 2 months ago

Highly exothermic reaction takes place.

0Thank You

Honey Jain 5 years, 2 months ago

Exothermic

0Thank You

Vaibhav Singhal 5 years, 2 months ago

Exothermic reaction

0Thank You

Priyanshu Kumar 5 years, 2 months ago

Exothermic

2Thank You

ANSWER

a short defination of chemical reaction?

Posted by Kehar Pundir Pundir 5 years, 2 months ago

CBSE > Class 10 > Science

4 answers

Diya Tandon 5 years, 2 months ago

A chemical reaction in which 2 or more substances combine to form a simgle substance is called chemical reaction.

1Thank You

A:) ‎ 5 years, 2 months ago

The exact defination is ' a process where a substance undergoes *chemical change* to form a new substance with totally different set of properties' briefly it is a chemical change

1Thank You

Minakshi Sharma 5 years, 2 months ago

reaction of reactant and product

0Thank You

Sonika Sakhare 5 years, 2 months ago

Reaction of chemicals

2Thank You

ANSWER

What is the minimum no. Of carbon atoms in fulleren and what is its shape?

Posted by Saloni Ghanshala 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Priya Yadav 5 years, 2 months ago

C60 and its like a soccer ball

1Thank You

Honey Jain 5 years, 2 months ago

polyhedral CARBON structure composed of around 60-80 carbon atoms in pentagon and hexagon configuration. They are named after Buckminster Fuller because of structural resemblance to geodesic domes. Fullerenes can be made in high temperature such as arc discharge in an inert atmosphere.

1Thank You

ANSWER

2.what is ph? Write it's uses.

Posted by Jaspreet Kaur 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Tanuj Chaudhary 5 years, 2 months ago

Ph is a scale used for units

1Thank You

Pallavi Thakur 5 years, 2 months ago

Ph means potenz or power of hydrogen. It simply is a number which indicates the acidic or basic nature of a solution Lower ph:higher acidic strength Higher ph:higher basic strength

1Thank You

Jai Sharma 5 years, 2 months ago

Ph is a value which helps us to identify a substances is acid or a base

0Thank You

ANSWER

Explain the breakdown of glucose

Posted by Kriti Rajput 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Vaibhav Singhal 5 years, 2 months ago

The breakdown of glucose by the process of respiration then the glucose convert into energy for the body

0Thank You

ANSWER

What are the limitations of chemical equation explain

Posted by Vikas Jaiswal 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Gaurav Seth 5 years, 2 months ago

A chemical equation has its own limitations. They do not provide information about:

The physical state of reactants and products Hence, the symbols ‘s’ for solid, ‘l’ for liquid, ‘g’ for gas and ‘vap’ for vapour are added.
Conditions such as temperature, pressure and catalyst affecting the reaction
Concentration of reactants and products Hence, in some cases, for dilute ‘dil.’ and for concentrated ‘conc.’ are added.
The nature of the chemical reaction; whether it is reversible or irreversible reaction.
Speed of the reaction
Heat changes accompanying the reaction; whether heat is given out or absorbed
Time taken for completion of the reaction A reaction may or may not be complete, and the equation does not reveal it.

0Thank You

ANSWER

Write the name of all inert element with their symbol and atomic number

Posted by Abhishek Ranjan 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Preeti 5 years, 2 months ago

Helium (He), Z=2 Neon (Ne),Z=10 Argon(Ar), Z= 18 Krypton(Kr), Z=36 Xenon(Xe), Z=54 Radon(Rn), Z= 86 YOU CAN REMEMBER THIS USING THE MEMONIC "Hema Ne Angrezi Ki Xerox Rakhvai" ☺

1Thank You

Gaurav Seth 5 years, 2 months ago

Zero group of Mendeleev's periodic table or the group 18 of long form of periodic table is comprised of six elements and these eleements are called as inert gases as trhese elements do not react (inert) with other elements due to their octet outer electronic configaration which is stable configaration. The electronic configuration is listed in the following table.

S.No	Element	Symbol	Atomic number	Electronic configuration
1	Helium	He	2	1s2
2	Neon	Ne	10	[He] 2s2sp6
3	Argon	Ar	18	[Ne] 3s23p6
4	Krypton	Kr	36	[Ar] 3d104s24p6
5	Xenon	Xe	54	[Kr] 4d105s25p6
6	Radon	Rn	86	[Xe] 4f145d106s26p6

0Thank You

ANSWER

Why is small intestine of herbivores longer than carnivorous

Posted by Sumit Sabar 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Gaurav Seth 5 years, 2 months ago

The small intestine is longer in herbivore than in carnivore because herbivores eat only grass which is full of cellulose and the digestion of cellulose takes a long time. Bile is a digestive juice secreted by the liver and stored in the gall bladder. The function of bile is to assist fat digestion and absorption in the gut. The length of small intestine differs in various animals depending on the food that they eat. Herbivores need a longer small intestine to allow cellulose to be digested as taken from green plants.

0Thank You

ANSWER

Good evening teachers and my dear friends, Muje aap sabki ek help chye...meri ek friend ha vo 10th mein ha aur abhi tak usne kuch bhi nahi padha ha......aur jab vo padhne baithi ha toh uska maan hi nahi karta ha padhne ka maan usko bata but jada sahi nahi laga usko....... Please kuch batee jiss ki uska syllbus bhi complete hoge and marks bhi aache aaye......please help...??

Posted by Teresa Singh ✌🏻 5 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Kehar Pundir Pundir 5 years, 2 months ago

use kho vo aapna timetable banaye aor pqdhne se phale motivational video dekh le fir timetable ke hisaab se kam kre

2Thank You

Teresa Singh ✌🏻 5 years, 2 months ago

Thank you so much dear...❤️

1Thank You

Meenakshi Mishra 5 years, 2 months ago

Usse bolo ki bo jab padhne baithe to ek baar meditation kre aur 1 hi chapter ko 2 se 3 baar revise kre... Aur apna ek perfect time table bna le..thank you?

4Thank You

Teresa Singh ✌🏻 5 years, 2 months ago

Hey ram!!?? Kio na vo bina number ke hi padh legi....padhne ka toh pta nahi par kuch aur na sikh jaye..

3Thank You

Tushar Learning And Entertainment Site 5 years, 2 months ago

Mera number de do use mujhse baat krte krte padhai sikh legi ??

1Thank You

ANSWER

Define oxidising and reducing agents with proper examples

Posted by Sofia Sharma 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Yogita Ingle 5 years, 2 months ago

An oxidizing agent (oxidant), gains electrons and is reduced in a chemical reaction. It is also known as electron acceptor. The oxidizing agent is usually in one of its higher possible oxidation states as it will gain electrons and be reduced.

Examples of oxidizing agents are:

potassium nitrate
halogens
nitric acid

A reducing agent (reductant), loses electrons and is oxidized in a chemical reaction. It is typically in one of its lower possible oxidation states and is known as an electron donor. A reducing agent is oxidized because it loses electrons in the redox reaction.

Examples of reducing agents are:

formic acid
the earth metals
sulfite compounds

0Thank You

Tushar Learning And Entertainment Site 5 years, 2 months ago

An oxidizing agent is substance which oxidizes something else. In the above example, the iron(III) oxide is the oxidizing agent. A reducing agent reduces something else. In the equation, the carbon monoxide is the reducing agent. Oxidizing agents give oxygen to another substance. Reducing agents remove oxygen from another substance.

0Thank You

ANSWER

Why do ionic compounds have high melting points

Posted by Dilraj Kâlêsh 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Teresa Singh ✌🏻 5 years, 2 months ago

Ionic compounds are held together by electrostatic forces between the oppositely charged ions . ... As the ionic lattice contains such a large number of ions, a lot of energy is needed to overcome this ionic bonding so ionic compounds have high melting and boiling points...... ?

1Thank You

ANSWER

where should we place the object in front of a concave mirror to obtain same size image

Posted by Ismail Irfan 5 years, 2 months ago

CBSE > Class 10 > Science

4 answers

Vaibhav Singhal 5 years, 2 months ago

The object placed at the centre of curvature

0Thank You

Sukhjot Kaur 5 years, 2 months ago

The object should be placed at the centre of the curvature

0Thank You

Sukhjot Kaur 5 years, 2 months ago

The object should be placed at the centre of the curvature

0Thank You

Teresa Singh ✌🏻 5 years, 2 months ago

The object should be placed at the centre of curvature of the concave mirror to obtain an image of same size and real image...?

0Thank You

ANSWER

A record player makes 60 rpm ( revolution per minute). Find it's angular velocity and it's period.

Posted by Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago

CBSE > Class 10 > Science

5 answers

☆°••(Prateek)••° ☆ 5 years, 2 months ago

Sale t.s. ka full form Bata be

2Thank You

Vaibhav Singhal 5 years, 2 months ago

Hello

1Thank You

☆°••(Prateek)••° ☆ 5 years, 2 months ago

Priya you forgot me?✌. I am Prateek your friend ?✌

1Thank You

Teresa Singh ✌🏻 5 years, 2 months ago

Priya...you such as nice person!!?? Ab yeh mat sochna ki jhuti tarif ha....?

1Thank You

A . 5 years, 2 months ago

Hi. Where are you from ?

1Thank You

ANSWER

Posted by Teresa Singh ✌🏻 5 years, 2 months ago

CBSE > Class 10 > Science

4 answers

☆°••(Prateek)••° ☆ 5 years, 2 months ago

Yes Priya it is very helpful for her

1Thank You

Saurabh ???? 5 years, 2 months ago

To usko bolo ki lecture shnaa. Ya kam to kar sakti hai na.

1Thank You

Teresa Singh ✌🏻 5 years, 2 months ago

Yeah it's really helpful...? But dear But she doesn't like to read....then tell what can she do....?? And jab bhi vo stdy karne baithi ha...toh 2 min mein baad kar deti ha study...ab batoo kya kar vo..?

1Thank You

Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago

Tell her to study with proper concentration.. and try to understand all the concepts clearly... so that she won't had to face any troubles with the upcoming exams... and you can also help her by making her to understand every chapter.. and that would be enough for her... ✌?

3Thank You

ANSWER

Why is centrifugal force called a pseudo force?

Posted by Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Ismail Irfan 5 years, 2 months ago

thanks

1Thank You

Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago

It's my pleasure✌ ?

1Thank You

Teresa Singh ✌🏻 5 years, 2 months ago

Your always welcome dear!!?

1Thank You

Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago

Thanks for your answer? ✌

1Thank You

Teresa Singh ✌🏻 5 years, 2 months ago

The centrifugal force in the nonintertial frame of reference of a particle in circular motion is the effect of the acceleration of the frame of reference with respect to an interial frame of reference. therefore, it is called a pseudo or fictitious force... ?

1Thank You

ANSWER

Join mee now on Google meet by meet.google.com/xgk-jpam-yyp

Posted by Siddharth Kumar ✔️✔️✔️ 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago

What is it❓ ??

1Thank You

ANSWER

How does lateral displacement vary with wavelength?

Posted by Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Teresa Singh ✌🏻 5 years, 2 months ago

Priya!! Please answer my question....it's very urgent...and if I didn't do anything then she will broken!!?

1Thank You

Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago

oh yeah??

1Thank You

Teresa Singh ✌🏻 5 years, 2 months ago

Keep smiling ?

2Thank You

Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago

Thanks for your answer... ya it's helpful?✌

1Thank You

Teresa Singh ✌🏻 5 years, 2 months ago

Lateral displacement increases with increase in angle of incidence and also increases with increase in refractive index. since refractive index increases with decrease in wavelength, so does lateral displacement, i.e, lateral displacement is more for violet light than for red. I hope it will helpfull..?

1Thank You

ANSWER

Please give the answers of science class 10 activity 15.3

Posted by Prachi Soni 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago

Your answer is here?Ponds and lakes contain decomposers which act as an cleansing agent, whereas an aquarium doesn't contain any decomposers which can clean the aquarium, so as a result an aquarium needs to be cleaned periodically... hope it helps you?✌

1Thank You

ANSWER

Explain Oersted's experiment.

Posted by Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago

CBSE > Class 10 > Science

4 answers

Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago

Thanks for your answer Prateek?✌

1Thank You

☆°••(Prateek)••° ☆ 5 years, 2 months ago

Oersted Experiment In 1820, Oersted established the relationship between electricity and magnetism. He concluded that a current carrying wire produces a magnetic field around it. Aim: To show that a current carrying wire produces a magnetic field around it. Experiment Setup: A thick insulated copper wire is taken and connected with the battery in such a way that current flows from South to North direction in the wire. A compass needle is placed under the wire. Observations: 1. When electric current is passed through the wire from South (S) to North (N) directions and the wire is placed over (O) the compass needle, the compass needle gets deflected towards West (W) direction (SNOW Rule). 2. On reversing the direction of current in the wire, the compass needle gets deflected in the opposite direction. 3. When current is switched off, then there is no deflection in the compass needle. Conclusion: The deflection of compass needle, whenever there is current in the wire shows that a current carrying wire produces a magnetic field around it. This video demonstrate the Oersted's Experiment i.e a current carrying conductor produces a magnetic field around it. Hope it will help you ?✌

2Thank You

Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago

Thanks for your answer? ✌

1Thank You

A . 5 years, 2 months ago

Orested showed in his experiment that current carrying conductor can produce magnetic field around it He took a wire and a magnetic compass for his experiment. When current does not flow in conductor then there is no deflection in the compass But he took magnetic compass close to current carrying conductor. He observed that there is deflection in the compass And finally he concluded current carrying conductor have magnetic field around it

1Thank You

ANSWER

Resistors of resistances 2 , 3 and 4 are connected in parallel in a circuit. Their equivalent resistance is

Posted by Akash Singh 5 years, 2 months ago

CBSE > Class 10 > Science