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2001.

A block of wood was placed in the path of light. It completely blocked the light to form a shadow. This is because wood block is ____.

Answer»

A block of wood was placed in the path of light. It completely blocked the light to form a shadow. This is because wood block is ____.



2002.

What is the type of the change, when paper is burnt to produce ash?

Answer»

What is the type of the change, when paper is burnt to produce ash?


2003.

1.Why clouds look blackish during rainy season but whitish in other seasons ? 2. Why clouds do not look rainbow colour ( as it is formed of water droplets ) ?

Answer» 1.Why clouds look blackish during rainy season but whitish in other seasons ? 2. Why clouds do not look rainbow colour ( as it is formed of water droplets ) ?
2004.

A substance which can be beaten into thin sheets is known as ____________.

Answer»

A substance which can be beaten into thin sheets is known as ____________.


2005.

If there are more than one type of molecules present in a substance, it is called a:

Answer»

If there are more than one type of molecules present in a substance, it is called a:


2006.

Which property of a filter paper is used to separate an insoluble solid from a liquid?

Answer» Which property of a filter paper is used to separate an insoluble solid from a liquid?
2007.

Question 51Give two examples each of the metals that are good conductors and poor conductors of heat respectively.

Answer» Question 51

Give two examples each of the metals that are good conductors and poor conductors of heat respectively.
2008.

The solubility of common salt increases rapidly with rise in temperature. True or false?

Answer» The solubility of common salt increases rapidly with rise in temperature. True or false?
2009.

Does normality affected by temperature?

Answer» Does normality affected by temperature?
2010.

What term defines a material's ability to get converted to sheets?

Answer»

What term defines a material's ability to get converted to sheets?


2011.

The process of removing cotton seeds from cotton pods is known as _______.

Answer»

The process of removing cotton seeds from cotton pods is known as _______.



2012.

What process is used for separating heterogeneous mixtures of insoluble solid-in-liquid?

Answer»

What process is used for separating heterogeneous mixtures of insoluble solid-in-liquid?


2013.

how to find no.of voids that will formed while finding the formula?

Answer» how to find no.of voids that will formed while finding the formula?
2014.

Can we separate alcohol dissolved in water by using a separating funnel?

Answer» Can we separate alcohol dissolved in water by using a separating funnel?
2015.

Explain the proces of sedimentation and decantation with the help of an example.

Answer»

Explain the proces of sedimentation and decantation with the help of an example.

2016.

In the process of knitting what is the role of the knitting needles?

Answer»

In the process of knitting what is the role of the knitting needles?

2017.

The temperature of a saturated solution of sugar in water is raised by 10 °C. Which of these statements is now true?(a) It will continue to be saturated.(b) It will become unsaturated.(c) Whether it remains saturated or becomes unsaturated depends on the amount of water taken.(d) It will continue to be saturated, but if the temperature is increased beyond 10 °C it will become unsaturated.

Answer» The temperature of a saturated solution of sugar in water is raised by 10 °C. Which of these statements is now true?

(a) It will continue to be saturated.

(b) It will become unsaturated.

(c) Whether it remains saturated or becomes unsaturated depends on the amount of water taken.

(d) It will continue to be saturated, but if the temperature is increased beyond 10 °C it will become unsaturated.
2018.

Explain the structure of ER and it's types in brief.

Answer» Explain the structure of ER and it's types in brief.
2019.

15. O.s of S is -2 then Equivalent weight is?

Answer» 15. O.s of S is -2 then Equivalent weight is?
2020.

Earth's surface has _____ percentage of fresh water and _____ percentage of saline water.

Answer»

Earth's surface has _____ percentage of fresh water and _____ percentage of saline water.


2021.

32. what is the meaning of:: alpha -D-glucose beta-D-glucose alpha or -D(-)-glucose also the significance of (-) sign

Answer» 32. what is the meaning of:: alpha -D-glucose beta-D-glucose alpha or -D(-)-glucose also the significance of (-) sign
2022.

which of the following option doesnot represent ground state electronic configuration of an atom ? 1. 1s2 2s2 2p6 3s2 3p6 3d8 4s2 2. 1s2 2s2 2p6 3s2 3p6 3d9 4s2 3. 1s2 2s2 2p6 3s2 3p6 3d10 4

Answer» which of the following option doesnot represent ground state electronic configuration of an atom ? 1. 1s2 2s2 2p6 3s2 3p6 3d8 4s2 2. 1s2 2s2 2p6 3s2 3p6 3d9 4s2 3. 1s2 2s2 2p6 3s2 3p6 3d10 4
2023.

can E1 andE2 both products form together

Answer» can E1 andE2 both products form together
2024.

2In a Kelvin scale thermometer. LFP and UFPare separated by 40mm. When it is immersedin a liquid, mercury colunn rises 10mmabove LFP. Temperature of liquid in Kelvinscale is

Answer» 2In a Kelvin scale thermometer. LFP and UFPare separated by 40mm. When it is immersedin a liquid, mercury colunn rises 10mmabove LFP. Temperature of liquid in Kelvinscale is
2025.

32. What is meant by molarity of a substance?

Answer» 32. What is meant by molarity of a substance?
2026.

Mettez les phrases au féminin.(1) Il est gentil.(2) Le garçon canadien est souriant.(3) L'homme danois est beau.(4) Il est gros.(5) Il est grand.(6) Il est content.(7) Il est sympathique.(8) Il est américain.(9) Il est italien.(10) Il est suisse.

Answer» Mettez les phrases au féminin.

(1) Il est gentil.



(2) Le garçon canadien est souriant.



(3) L'homme danois est beau.



(4) Il est gros.



(5) Il est grand.



(6) Il est content.



(7) Il est sympathique.



(8) Il est américain.



(9) Il est italien.



(10) Il est suisse.

2027.

In coastal area, wind current moves from the sea towards the land during day; but during night it moves from land to the sea. Discuss the reason. [2 MARKS]

Answer»

In coastal area, wind current moves from the sea towards the land during day; but during night it moves from land to the sea. Discuss the reason. [2 MARKS]



2028.

The reverse process of sublimation is called___________

Answer»

The reverse process of sublimation is called___________


2029.

name two items that are made from coconut fibre

Answer»

name two items that are made from coconut fibre

2030.

Which property of the particles of a matter is directly related to the temperature?

Answer»

Which property of the particles of a matter is directly related to the temperature?


2031.

What is hydrolysis ? What are its examples?

Answer»

What is hydrolysis ? What are its examples?

2032.

Cotton plants are usually grown at places having:

Answer»

Cotton plants are usually grown at places having:


2033.

Mention the similarities between copper iron and aluminium

Answer»

Mention the similarities between copper iron and aluminium

2034.

Why are we able to compress a sponge, even though it is solid?

Answer»

Why are we able to compress a sponge, even though it is solid?


2035.

A boy adds some hot water (not too hot) in an aquarium to make the water warm. The fish doesn't die from the heat. What happens?

Answer»

A boy adds some hot water (not too hot) in an aquarium to make the water warm. The fish doesn't die from the heat. What happens?


2036.

Which of the following living organism live over the land surface?

Answer»

Which of the following living organism live over the land surface?

2037.

Which of the following is common for both respiration and combustion?

Answer»

Which of the following is common for both respiration and combustion?


2038.

Earth is called the blue planet because 71% of the Earth's surface is covered with water, but we still face and hear stories about water shortage. What can be the possible reason for this?

Answer»

Earth is called the blue planet because 71% of the Earth's surface is covered with water, but we still face and hear stories about water shortage. What can be the possible reason for this?


2039.

If you pour water over a sample of soil, you can observe ___ .

Answer»

If you pour water over a sample of soil, you can observe ___ .


2040.

Aquatic animals use _________ in water for respiration

Answer»

Aquatic animals use _________ in water for respiration


2041.

Sushma has to prepare biryani, before which she has to remove dust particles from the rice. Which of the following processes can be used?

Answer»

Sushma has to prepare biryani, before which she has to remove dust particles from the rice. Which of the following processes can be used?


2042.

Suggest innovative ways of curtailing the breeding of mosquito and proposals on what individual can do ??

Answer» Suggest innovative ways of curtailing the breeding of mosquito and proposals on what individual can do ??
2043.

The metal and non-metal that are liquid at room temperature are _____and_____ respectively.

Answer»

The metal and non-metal that are liquid at room temperature are _____and_____ respectively.


2044.

As a friend, Neena is not ______ as Geraldine.

Answer»

As a friend, Neena is not ______ as Geraldine.


2045.

Why do you think oxygen dissolved in water is important for the survival of aquatic animals and plants.

Answer»

Why do you think oxygen dissolved in water is important for the survival of aquatic animals and plants.

2046.

The atomic weight of two elements A and B are 40 and 80 respectively. If x g of A contains y atoms,how many atoms are present in 2x g of B?

Answer»

The atomic weight of two elements A and B are 40 and 80 respectively. If x g of A contains y atoms,how many atoms are present in 2x g of B?

2047.

What does a change refer to?

Answer»

What does a change refer to?


2048.

The process of 'Threshing' is done after:

Answer»

The process of 'Threshing' is done after:


2049.

What is weaving

Answer»

What is weaving

2050.

The principle behind using winnowing as a method of separation is based on the difference in _________ of the particles.

Answer»

The principle behind using winnowing as a method of separation is based on the difference in _________ of the particles.