Incorrect URL accessed!!!!

Anusuya Jayashrii 6 years ago

Acquired traits - *Do not bring changes . *Cannot undergo direct evolution. *Cannot be passed on to the progeny. Inherited traits- *Bring changes. *Can undergo direct evolution. *Can be passed on to the progeny.

Lucifer ? Morningstar? 6 years ago

Inherited traits are those traits which we get from our parents but in acquired traits which we gain ourselves.

ANSWER

Difference between excretion and egestion

Posted by Lucifer ? Morningstar? 6 years ago

CBSE > Class 10 > Science

2 answers

Arya Magade 6 years ago

Excretion is the removal of liquid waste from our body while egestion is the removal of solid waste from our bodies.

Raushan Roy 6 years ago

digeste food remove by the west form through the body

ANSWER

What happened when eggs shells are dissolved in nitric acid?

Posted by Lucifer ? Morningstar? 6 years ago

CBSE > Class 10 > Science

1 answers

Vikas Saini 6 years ago

Answer : Since egg shell is made of calcium carbonate. And we know that when calcium carbonate (CaCO3) reacts with nitric acid (HNO3) then carbon dioxide, calcium nitrate and water are formed. So same reaction happens when nitric acid is added to an eggshell.

ANSWER

The reaction of turmeric with alkali

Posted by Ajeet Singh 6 years ago

CBSE > Class 10 > Science

3 answers

Mohammad Saifullah 6 years ago

reddish brown

? ... 6 years ago

Turmeric will turn red

Lucifer ? Morningstar? 6 years ago

Turmeric change its color yellow to red when react with bases

ANSWER

Name the reducing agent in the given equation. fe O + 3CO. 2fe +3CO

Posted by Saurabh Raj 6 years ago

CBSE > Class 10 > Science

3 answers

Vikas Saini 6 years ago

This reaction may be wrong.

Mohammad. Kaif Ali 6 years ago

Mohammad Saifullah 6 years ago

ANSWER

What do you understand by esters

Posted by Vinay Tomar 6 years ago

CBSE > Class 10 > Science

3 answers

Arya Magade 6 years ago

Carboxylic acid + Alcohol ---------- gives ester and the process is called esterification

Mohammad. Kaif Ali 6 years ago

When alcohol reacts with carboxylic acid to form ester

Lucifer ? Morningstar? 6 years ago

When alcohol and carboxylic acid react it form a compound known as ester.

ANSWER

Give any two types of receptors

Posted by Ram ? 6 years ago

CBSE > Class 10 > Science

2 answers

Vikas Saini 6 years ago

Hand eye etc.

Garima Chauhan 6 years ago

Gustatory and olfactory

ANSWER

Scientific name of pea plant

Posted by Vedansh Sharma 6 years ago

CBSE > Class 10 > Science

5 answers

Arya Magade 6 years ago

Pisum Sativum

Vikas Saini 6 years ago

Pisum sativum

Sakshi Yadav 6 years ago

pisum sativum

Ignored Person??☹☹ 6 years ago

Pisum sativum

Abhinav ? 6 years ago

Pisum sativum

5Thank You

ANSWER

Name the particle that constitutrs electric current in a metallic conductor

Posted by Arya Sharma 6 years ago

CBSE > Class 10 > Science

3 answers

Vivek Kumar Kumar 6 years ago

Electrons

Ignored Person??☹☹ 6 years ago

Free electrons..

3Thank You

Arya Sharma 6 years ago

Electrons are the particle that constitutes current in metallic conductor

ANSWER

The Number of covalent bond present in pentane

Posted by Manish Shrivash 6 years ago

CBSE > Class 10 > Science

6 answers

Mohammad. Kaif Ali 6 years ago

Ignored Person??☹☹ 6 years ago

Shreya Sinha 6 years ago

3Thank You

Vedansh Sharma 6 years ago

Parishi Thada 6 years ago

The ans is 16

Abhinav ? 6 years ago

16..

ANSWER

What is lattest paper style of class x for boadd exam 2020?

Posted by Vijay Bhatt 6 years ago

CBSE > Class 10 > Science

2 answers

Ignored Person??☹☹ 6 years ago

On this app or at www.cbse.nic.com

Ignored Person??☹☹ 6 years ago

See the sample papers

ANSWER

What are universal indicators

Posted by Shalu Nagar 6 years ago

CBSE > Class 10 > Science

2 answers

? ... 6 years ago

It is a special type of indicatoer which not only detect that the given substance is acid or base it also detect that it is strong acid, strong base , weak acid or weak base . ph is universal indicator.

3Thank You

Yogita Ingle 6 years ago

Universal indicator is a pH indicator that transitions through numbers 3-12 (on the pH chart) to indicate the acidity or alkalinity of solutions.

Details:

pH value: Approximately 7

A universal indicator is typically composed of water, methanol, propan-1-ol, phenolphthalein sodium salt, methyl red sodium salt, bromothymol blue monosodium salt, and thymol blue monosodium salt ^.

ANSWER

Why tungsten selected for making filament of incandescent lamp bulbs

Posted by Ananthu Anil 6 years ago

CBSE > Class 10 > Science

4 answers

Abhi Technical 6 years ago

Tugsten metal has melting point that is 3300 degree celsius .it can't be melt easily .Its also have a high resistivity since this metal is choosen as filament for bulb.

Yogita Ingle 6 years ago

Tungsten metal is selected for making filaments of incandescent lamp bulbs because tungsten can sustain high temperatures and it has high melting point, combined with the fact that it also has high resistivity.

Ignored Person??☹☹ 6 years ago

Yes,same and it is also a good conductor..

Shreya ... 6 years ago

Beacuse it has high melting temperature..

5Thank You

ANSWER

If object distance and image distance given how can we find focal length without calculation

Posted by Manoj Singh 6 years ago

CBSE > Class 10 > Science

1 answers

Abhi Technical 6 years ago

We can find the focal length without calculation by knowing position of object and image

ANSWER

Imp questions for science class 10

Posted by Mr Thakur 2021 6 years ago

CBSE > Class 10 > Science

1 answers

? ... 6 years ago

You can download the pdf of chapterwise imp question from vedantu i think only important question are not enough you can solve sample paper and study ncert questions these are most important .

ANSWER

Child birth take place in oviduct or ovry

Posted by Raghav Kaushik 6 years ago

CBSE > Class 10 > Science

2 answers

Vikas Saini 6 years ago

Child birth take place on plesanta

Kakali Mukherjee 6 years ago

Oviduct

ANSWER

All alkalis are base but all base are not alkalis why?

Posted by Bhuwan Sing Limboo 6 years ago

CBSE > Class 10 > Science

3 answers

Abhi Technical 6 years ago

A water soluble base is called alkalies. But some bases are not soluble in water since we can say that all alkalies are base but all bases are not alkalies.

Gaurav Seth 6 years ago

A base is a substance that reacts with acids and neutrlize them. Some bases are soluble in water some are insoluble. Soluble bases are called alkalies.
For example copper oxide does not dissolve in water. Hence it is called as base.

Definition of an alkali: A base that is soluble in water is called an alkali.
In general hydroxides of alkali metals and alkaline earthmetals are considered as alkalies.
Example:
KOH (aq) → K⁺(aq) + OH^- (aq)
Ca(OH)₂(aq)→ Ca⁺² (aq) + OH^- (aq)

Therefore, it is said that all alkalis are bases, but all bases are not alkalies.

? ... 6 years ago

Because alkalis are water desolve bases but all the base but all the bases are not desolved in water

4Thank You

ANSWER

What is nomenclature ?????

Posted by Vidushi Saraw 6 years ago

CBSE > Class 10 > Science

2 answers

Gaurav Seth 6 years ago

A standard and widely accepted system of naming plants and animals is the binomial nomenclature. It involves the naming an organism with the help of two names, the genus name, and the specific name.

Aditya Gupta Gupya 6 years ago

the naming of anything

ANSWER

Why hydrogen gas burn with pop sound

Posted by Adarsh Mishra 6 years ago

CBSE > Class 10 > Science

2 answers

Piyush Nigam 6 years ago

Because hydrogen Is not the supporter of burning so it diffuse the burning flame and produces a pop sound

Qarina Nizami 6 years ago

The pop sound comes from the small explosion formed by the burning of Hydrogen with oxygen.

ANSWER

Name two industries based on forest produce

Posted by Sushobhit Sajwar 6 years ago

CBSE > Class 10 > Science

4 answers

Vikas Saini 6 years ago

Bidi, paper etc.

Mohammad. Kaif Ali 6 years ago

Medicine industry and furniture industry

Arya Magade 6 years ago

Medicine Industry, Furniture industry, Textile Industry, Paper and Pulp Industry, Automobile Industry etc. These Industries are based on Forest Produce.

??????? ? 6 years ago

Pulp and Paper Industries Match Industries

ANSWER

What is catalyst?in brief please?

Posted by Vikas Saini 6 years ago

CBSE > Class 10 > Science

6 answers

Mohammad. Kaif Ali 6 years ago

Catalyst is the substance doesn't participate any reaction but increase and decrease the rate of reaction.

Sujal Kumar 6 years ago

A substance that makes a chemical rxn happen faster.

Gaurav Chaudhary 6 years ago

Catlyst is the substance not participating any rxn but increase the rate of rxn

Qarina Nizami 6 years ago

catalyst-A substance that increase the rate of chemical reaction without causing any chemical change ex maganese cobalt nickel

Qarina Nizami 6 years ago

the substance in whose presence the rate of chemical reactions but in the reaction without causing any chemical change to it is called catalyst ex cobalt nickel

Sushobhit Sajwar 6 years ago

Name two industries based on forest produce

ANSWER

Difference displcement and double displacement reaction

Posted by Yadav Raveen 6 years ago

CBSE > Class 10 > Science

3 answers

Arya Magade 6 years ago

* Displacement Reaction :- In this reaction, the highly reactive metal displaces the less reactive metal. *Double Displacement Reaction :- 1) In this Reaction, both the reactants and the products are displaced from their solutions.

Gaurav Chaudhary 6 years ago

Double Displacement rxn on both side changes ion

Gouri Patil 6 years ago

In displacement reaction the high reactive metal displaces low reactive metal where in double displacement reaction on both sides of the reaction they change their ions

ANSWER

What is the advantages and disadvantages of geothermal energy

Posted by Mariya Mufaddal 6 years ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 6 years ago

Advantages of Geothermal Ennergy:

Significant Cost Saving
Reduce Reliance on Fossil Fuels
Environmental Benefits
Direct Use
Job Creation and Economic Benefits

Disadvantages of Geothermal Energy:

Not Widespread Source of Energy
High Installation Costs
Can Run Out Of Steam
Suited To Particular Region
May Release Harmful Gases

ANSWER

Stigamatism

Posted by Ashish Kumar 6 years ago

CBSE > Class 10 > Science

1 answers

Gouri Patil 6 years ago

Astigmatism means its a type of eye defect in which a person is not able to detect between horizontal and vertical lines to cure this defect a person should use cylinderical lens

ANSWER

Explain the Darwin's theory

Posted by Piyush Yadav 6 years ago

CBSE > Class 10 > Science

2 answers

Yogita Ingle 6 years ago

Following are the points of Darwin’s theory of natural selection:

Over-production: Every organism has enormous potential to reproduce.
Struggle for existence: Population size of an organism is limited due to struggle between the members of same species as well as the members of different species. It is due to struggle for food, space and mate.
Variation: Due to struggle, the fit organisms possess some variations which are favourable, and they can leave the progeny to continue the favourable variations.
Survival of the fittest: The fittest organism survive to continue the favourable variations.
Formation of a new species: These variations when accumulated for a long time, leads to the origin of a new species.

Vikas Saini 6 years ago

It is so long

ANSWER

What is dialysis? Explain its principles

Posted by Piyush Yadav 6 years ago

CBSE > Class 10 > Science

3 answers

Yogita Ingle 6 years ago

A kidney can filter 100-150 quarts of blood every day. If the kidneys are not functioning properly, waste starts accumulating in the blood. This results in coma and even death.

To cure this, the patient is subjected to dialysis. Dialysis maintains the body balance in the following ways:

It controls the blood pressure.
It removes excess water and metabolic wastes from the body.
Prevents chemicals such as potassium, bicarbonate and sodium from reaching hazardous levels.

Dialysis is used for people with a critical kidney disorder (grave kidney damage, previously severe renal failure). It is required when the kidney loses 90% of its efficiency and has a glomerular filtration rate of less than 15. This treatment may continue for months or years since most kidney failures are irreversible.

Gaurav Chaudhary 6 years ago

Kidney

Lucifer ? Morningstar? 6 years ago

The process of removing waste products and excess fluid from the body

ANSWER

State difference between the artery and vein and capillary

Posted by Piyush Yadav 6 years ago

CBSE > Class 10 > Science

2 answers

Qarina Nizami 6 years ago

artries they are thick walls they carry blood from heart to body parts they take all oxygenated blood except pulmonery artries veins they are thin walls they carry doxygenoxygenated except pulmonery vein they carry blood from parts to heart

Sambhav Maheshwari 6 years ago

Artery contains co2 blood and vein contains 02 blood and capillars are helping to purification of c02 blood