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What are limitations of mordrn periodic table given by mossley

Posted by Taruna Chundawat 6 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Yogita Ingle 6 years, 2 months ago

Limitations of modern periodic table:
i. Uncertainty regarding the position of hydrogen whether it should be placed in IA group or VIIA group.
ii. No place for isotopes in the Modern periodic table.
iii. Lanthanides and Actinides kept separately under the table not kept within the Modern periodic table.

Tanya Singh 6 years, 2 months ago

Position of hydrogen

Praveen Singh 6 years, 2 months ago

63

ANSWER

What do you mean by charge

Posted by Piyush Yadav 6 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Khushi Rathore 6 years, 2 months ago

Charge is the flow of electrons.

Yash Gupta 6 years, 2 months ago

Flow if e-

ANSWER

CH2=C=C=CH2. What is its name

Posted by Vishal Raj 6 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Noble Binu 6 years, 2 months ago

Butene

Aahna Sharma 6 years, 2 months ago

But-1,1diene

Jais ?✍️ ... 6 years, 2 months ago

There should be only one double or triple bond in this....and you have written all double bonds in this ....so no name can be given.

Piyush Yadav 6 years, 2 months ago

Butene

Ayush Singh 6 years, 2 months ago

Butyene

ANSWER

How to make a magnet

Posted by Shaila Kharche 6 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Taruna Chundawat 6 years, 2 months ago

By passing electricity in copper wire wrapped on soft iron

ANSWER

Why does stars twinkling

Posted by Vivek Pandey 6 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Khushi Rathore 6 years, 2 months ago

Due to atmospheric refraction...

Yogita Ingle 6 years, 2 months ago

Stars do not really twinkle, they just appear to twinkle when seen from the surface of Earth. The stars twinkle in the night sky because of the effects of our atmosphere. When starlight enters our atmosphere it is affected by winds in the atmosphere and by areas with different temperatures and densities. This causes the light from the star to twinkle when seen from the ground due to atmospheric refraction.

Yash Gupta 6 years, 2 months ago

Due to atmospheric refraction

Piyush Yadav 6 years, 2 months ago

Due to refraction of light

Dsr 018 6 years, 2 months ago

Due to refraction of light through different layers like lithosphere, atmosphere,stratosphere,etc.

ANSWER

What is the chemical formula of h2o

Posted by Sudeep Hada 6 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Khushi Rathore 6 years, 2 months ago

Dihydrogen monoxide

Uday Chauhan 6 years, 2 months ago

Dihydrogen monoxide

Taruna Chundawat 6 years, 2 months ago

Hydroxide

Aadya Singh ? 6 years, 2 months ago

The chemical name of H2O is dihydrogen monoxide.

Rekha Devi 6 years, 2 months ago

Water

ANSWER

How pupil work

Posted by Anas Anwar 6 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Rekha Devi 6 years, 2 months ago

Thank

Garvit Sharma 6 years, 2 months ago

Pupil is a gap between two iris muscles. The pupil decides how much amount of light is to fall on crystalline lens . This is regulated by iris.

ANSWER

What are plant harmones? Give an example

Posted by Tushar Sindhi 6 years, 2 months ago

CBSE > Class 10 > Science

3 answers

??Rupi.... ..?? 6 years, 2 months ago

They are chemical substance which help to grow plants. They are also called phytohormones. Eg. Auxin, ......as mentioned above

Aadya Singh ? 6 years, 2 months ago

The function of control and coordination in plants is performed by the chemical substance called plant hormones. For example - Auxins, Gibberellins, Cytokinins and Abscisic acid.

Aditya Dadhich 6 years, 2 months ago

Plant harmone are those harmones which coordinate their behaviour with response to the stimulus. They normally respond by growing a part of the plant. Example gibberlin,auxin,cytokinins,absisic acid

ANSWER

Hoe do Mendel's experiment show that traits are inherited independently?

Posted by Tushar Sindhi 6 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Aditya Singh 6 years, 2 months ago

Mendel use dihybrid cross to show that trait are inherited independently he use a round yellow and wrinkled green and observed that all progeny in fi generation were round yellow but when he doing selfing between fi generation he observed some new type of progeny such as round green wrinkled yellow thus Mendel experiment show that trait inherited indepedently

ANSWER

Describe mendeleevs periodic table??????

Posted by Ignored Person??☹☹ 6 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Yogita Ingle 6 years, 2 months ago

Mendeleev’s Periodic Law states that the properties of elements are the periodic function of their relative atomic masses.

Mendeleev arranged all 63 elements; which were discovered till his time; in the order of their increasing relative atomic masses in a tabular form. It is known as Mendeleev’s Periodic Table. He divided the table in eight columns and seven rows. The columns are known as groups and rows are known as periods.

Elements are arranged in the periodic table in the increasing order of their relative atomic masses.
Mendeleev divided his periodic table in eight groups and seven periods.
Groups from I to VII are meant for normal elements and group VIII is for transition elements.
Groups from I to VII have been divided in two sub groups, while group VIII is meant for three elements.
Periods from 4th to 7th have been divided in two series: 1st series and 2nd series.
Elements having similar properties have been kept in the same group. For example; lithium, potassium, rubidium, etc. are in 1st group.

Ignored Person??☹☹ 6 years, 2 months ago

Hi Shreya..

Tushar Sindhi 6 years, 2 months ago

According to this law " The fundamental properties of the elements is their atomic masses ".

ANSWER

Describe the working of human heart with a suitable diagram

Posted by Sakshi ? 6 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Naman Tayal 6 years, 2 months ago

The heart has four chambers: The right atrium receives blood from the veins and pumps it to the right ventricle. The right ventricle receives blood from the right atrium and pumps it to the lungs, where it is loaded with oxygen. ... The left ventricle (the strongest chamber) pumps oxygen-rich blood to the rest of the body.

ANSWER

Marks distribution of science

Posted by Harshita Sharma?? 6 years, 2 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

What are rhe Function of nephron

Posted by Tanish Chimaniya 6 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Uday Chauhan 6 years, 2 months ago

It is a functional and structural unit of kidney it filters the blood in order to remove the nitrogenous and metabollic waste from our body

Shree Niwass 6 years, 2 months ago

Nephron is a structural and functional unit of kidney.it filters the blood in order to remove nitrogenous metabolic waste .they also absorb some useful substances such as glucose,amino acid ,minerals and major amount of filterate

Harshita Sharma?? 6 years, 2 months ago

Nephron help in filtering nitrgenous waste from the blood.

ANSWER

Pthagoreas theorem plz send ?

Posted by Secret Girl...? 6 years, 2 months ago

CBSE > Class 10 > Science

7 answers

Secret Girl...? 6 years, 2 months ago

??oh phchan liya

Shreyas Samarth 5 years, 11 months ago

No how can i forget u.....?????

Secret Girl...? 5 years, 11 months ago

U forgot me shreyas

Secret Girl...? 6 years, 2 months ago

No shreyas... I m old here ?

Shreyas Samarth 6 years, 2 months ago

H^2=P^2+B^2 in underroot...

Shreyas Samarth 6 years, 2 months ago

You r new here??

Shreyas Samarth 6 years, 2 months ago

Hi

ANSWER

The cleaning capacity of soap is maximum in : (a) tap water (b) handpump water (c) rain water (d) tube well water

Posted by Priya Verma 6 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Samiksha Krishnasamy 6 years, 2 months ago

Tap water >tube well water >rain water>handpump water

Keep ? 6 years, 2 months ago

B

ANSWER

2.8 expressed in p ÷q form is

Posted by Samira Aliazizi 6 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Arun Kirar 6 years, 2 months ago

14/5..!

Kumkum Sarswat 6 years, 2 months ago

14/5 ..............

Bharath H S 6 years, 2 months ago

14/5

Rajnish Kumar 6 years, 2 months ago

2.8=14/5 or 14÷5

Samira Aliazizi 6 years, 2 months ago

14÷5.

ANSWER

What is corpus callosum

Posted by Mayur Kharche 6 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Mayur Kharche 6 years, 2 months ago

It is the largest bundle of nerve fibers that connects the left and right cerebral hemispberes

Kumkum Sarswat 6 years, 2 months ago

The largest bundle of nerve fibers that connects the left and right cerebral hemispheres..........

Shreya ... 6 years, 2 months ago

<I>It is the largest bundle of nerve fibers that connects the left and right cerebral hemispheres.

ANSWER

What is the direction of conventional current

Posted by Anju Gupta 6 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Kumkum Sarswat 6 years, 2 months ago

Positive to negative.......

Mayur Kharche 6 years, 2 months ago

From positive to negative terminal of cell or battery?

Aadya Singh ? 6 years, 3 months ago

From positive to negative terminal of a cell...

ANSWER

Which metal does not stick to glass????

Posted by Anwesha Boruah 6 years, 3 months ago

CBSE > Class 10 > Science

6 answers

Prmod Singh 6 years, 2 months ago

Mercury

Kumkum Sarswat 6 years, 2 months ago

Mercury.........

??Geetha Sree ?? 6 years, 2 months ago

Mercury. And its alloy is amalgam.

Aanvii Dora 6 years, 2 months ago

Mercury

Saurav Kumar 6 years, 3 months ago

Mercury (Hg)

Abhinav ? 6 years, 3 months ago

Mercury

ANSWER

Diffrence between breathing and respiration

Posted by Kalpit Saini 6 years, 3 months ago

CBSE > Class 10 > Science

2 answers

??Geetha Sree ?? 6 years, 2 months ago

Breathing is a process through which an organism inhales oxygen and exhales carbon dioxide. Whereas respiration is a process in which the oxygen inhaled is used for further breaking down of the glucose by the mitochondria and releases carbon dioxide and energy.

Thakur Shab 6 years, 3 months ago

Breathing is a physical processWhere you inhale and exhale Air in and out Of your lungs Respiration is chemical reaction where oxygen Is used to break down glucose To generate energy Which is then used by the boxy and cells

ANSWER

What is the frequency in India

Posted by Wwe Mhas 6 years, 3 months ago

CBSE > Class 10 > Science

4 answers

Uday Chauhan 6 years, 2 months ago

50hertz

Kumkum Sarswat 6 years, 2 months ago

50 Hz.......

Vikas Saini 6 years, 3 months ago

50Hz

Dev Sharma 6 years, 3 months ago

50 Hz(hertz)

ANSWER

How can you find the direction of Bar-Magnet?

Posted by Shane Mobin Siddique 6 years, 3 months ago

CBSE > Class 10 > Science

2 answers

??Geetha Sree ?? 6 years, 2 months ago

Through right hand thumb rule.

Rishi Jain 6 years, 3 months ago

By taking a another magnet nearby it

ANSWER

Whicj is the highest and lowest metal ,non-metal and metalloid

Posted by Veena Nautiyal 6 years, 3 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

What's the marking scheme of exam?

Posted by Nitika Gandhi 6 years, 3 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

What is the potential difference between the live wire and neutral wire?

Posted by Rishabh Yadav 6 years, 3 months ago

CBSE > Class 10 > Science

5 answers

Kumkum Sarswat 6 years, 2 months ago

220 V..........

Keshav Kumar 6 years, 2 months ago

220 v (volt)

Dev Sharma 6 years, 3 months ago

220 V (volt)

Amit Yadav 6 years, 3 months ago

220 volt

Manish Panwar 6 years, 3 months ago

220 volt in india.

ANSWER

What are the two main component of our environment

Posted by Aman Pandey 6 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Kumkum Sarswat 6 years, 2 months ago

Biotic and abiotic components........

Deepak Singh 6 years, 3 months ago

1. Biotic component 2. Abiotic component

ANSWER

Difference between fission and fusion?...

Posted by Gaurav Kumar 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Mahi Mahi 6 years, 3 months ago

Fission is the process of separation of one things into two part Fussion is the process of formation of one things in meet-up of two things.

ANSWER

What does translocation means ?

Posted by Suraj Dendor 6 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Kumkum Sarswat 6 years, 2 months ago

Transfer of food materials in plant body.......

Mahi Mahi 6 years, 3 months ago

Sorry this answer not for you

Mahi Mahi 6 years, 3 months ago

Fission is the process of separation of one things into two part. Fussion is the process of formation of one things in meet-up of two things.

ANSWER

Why concentration sulphuric acid is used in ester reaction

Posted by Shanaya Rawat 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Shanaya Rawat 6 years, 3 months ago

To remove water molecules

ANSWER

Why did tooth decay when pH value below 5.5 ?

Posted by Pk Toon 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Dipika Mohan 6 years, 3 months ago

Tooth decay starts when oh is 5.5 because of acid present in it. Bacteria produce acids by degradation of sugar and food particles remaining in the mouth. Therefore calcium phosphate does not dissolve in water but is corroded when the pH of mouth is below 5.5.

ANSWER

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