Recent questions tagged class 7

Which of the following gland secretes bile?

asked Aug 28, 2017 by priyanka.c

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A separation technique which uses a fractionating column to separate different liquid components in a mixture with different boiling points by heating mixture is called

asked Aug 18, 2017 by meena.p

1 answer

How many colours the sunlight spectrum has?

asked Aug 18, 2017 by meena.p

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Which of the following has an organic origin?

asked Aug 18, 2017 by meena.p

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Which of the following is necessary for burning (combustion)?

asked Aug 18, 2017 by meena.p

2 answers

The three states of matter are solid, liquid and gas.

asked Aug 18, 2017 by meena.p

1 answer

Metal pots are often made shiny on surface outside especially on the top and side and that makes sense thermally because this ___ .

asked Aug 18, 2017 by meena.p

1 answer

Movement of electrons in fixed orbits around nucleus was given by

asked Aug 18, 2017 by meena.p

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Carbon, hydrogen and oxygen combines together to make

asked Aug 18, 2017 by meena.p

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At end of a reaction, catalyst

asked Aug 18, 2017 by meena.p

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‘Bar’ is the unit of ?

asked Aug 17, 2017 by meena.p

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Which among the following is a positively charged particle emitted by a radioactive element?

asked Aug 17, 2017 by meena.p

1 answer

Which gas evolves when charcoal is burnt?

asked Aug 17, 2017 by meena.p

1 answer

The Earth is surrounded by an insulating blanket of gases which protects it from the light and heat of the Sun. This insulating layer is called the

asked Aug 17, 2017 by meena.p

1 answer

Glass is made of the mixture of

asked Aug 17, 2017 by meena.p

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When liquids are heated, they

asked Aug 17, 2017 by meena.p

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When you heat a system, its temperature _ _ .

asked Aug 17, 2017 by meena.p

1 answer

Metal pots are often made shiny on surface outside especially on the top and side and that makes sense thermally because this ___ .

asked Aug 17, 2017 by meena.p

1 answer

Vulcanization is a ?

asked Aug 17, 2017 by meena.p

1 answer

Meaning of word 'anhydrous' is

asked Aug 17, 2017 by meena.p

1 answer

Compared to gases, liquids are

asked Aug 17, 2017 by meena.p

1 answer

Which of the following is a protein?

asked Aug 17, 2017 by meena.p

1 answer

Atoms are composed of

asked Aug 17, 2017 by meena.p

1 answer

Light year is a unit of measurement of

asked Aug 17, 2017 by meena.p

1 answer

If baking soda or fruit salt is mixed with vinegar there takes place a

asked Aug 17, 2017 by meena.p

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Point at which solid substance changes into liquid state it is called

asked Aug 17, 2017 by meena.p

1 answer

Solubility of gases increases with decrease in

asked Aug 17, 2017 by meena.p

1 answer

Potassium Permanganate is used for purifying drinking water, because

asked Aug 17, 2017 by meena.p

1 answer

Permanent hardness of water can be removed by adding

asked Aug 17, 2017 by meena.p

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Ionic bonds are

asked Aug 17, 2017 by meena.p

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Which of the following is a physical change?

asked Aug 17, 2017 by meena.p

1 answer

What are the soaps?

asked Aug 17, 2017 by meena.p

1 answer

If mass of protons and neutrons is 1, then mass of electron is

asked Aug 17, 2017 by meena.p

1 answer

Which of the following is used as a moderator in nuclear reactor?

asked Aug 17, 2017 by meena.p

1 answer

Light year is a measurement of

asked Aug 17, 2017 by meena.p

1 answer

Which of the following is the lightest metal?

asked Aug 17, 2017 by meena.p

1 answer

Water can be separated from mud by help of

asked Aug 17, 2017 by meena.p

1 answer

Movement of particles from an area of higher concentration to an area of lower concentration is called

asked Aug 17, 2017 by meena.p

1 answer

Element which is filled in thermometer due to its temperature sensitivity is called

asked Aug 17, 2017 by meena.p

1 answer

If carbon dioxide is passed through limewater it will form

asked Aug 17, 2017 by meena.p

1 answer

Actinides are the elements with atomic numbers from

asked Aug 17, 2017 by meena.p

1 answer

Soda water contains

asked Aug 17, 2017 by meena.p

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A liquid cannot be

asked Aug 16, 2017 by meena.p

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All matter is made up of tiny discrete particles too small to be seen was hypothesis of

asked Aug 16, 2017 by meena.p

1 answer

Which of the following statements is not correct?

asked Aug 16, 2017 by meena.p

1 answer

Find the natural indicator from the following

asked Aug 16, 2017 by meena.p

1 answer

Neutral solutions which do not change the colour of either red/blue litmus are known as

asked Aug 16, 2017 by meena.p

1 answer

Paper is manufactured by

asked Aug 16, 2017 by meena.p

1 answer

Jatin prepared the following set-ups to 'make rain'. The same amount of water was used for each set-up. Study them carefully to find out which set-up will form the most 'rain'?

asked Aug 16, 2017 by meena.p

0 answers

Water is a good solvent of ionic salts because

asked Aug 16, 2017 by meena.p

1 answer

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