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‘A’ is

  1.    
  2.    
  3.    
  4.    

The correct answer is:

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Statement – 1 : In the long form of periodic table, the elements are arranged in order of increasing atomic number.
Statement – 2 : The properties of the elements are related to the atomic masses.

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Statement – 2 : The properties of the elements are related to the atomic masses.

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Who gave the law of octaves?

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The state of matter where matter is condensed is :
i)solid state
ii)liquid state
iii)gaseous state

The state of matter where matter is condensed is :
i)solid state
ii)liquid state
iii)gaseous state

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The volume of matter in 1 kg of cotton is that present in 1 kg of sugar

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The matter that has stronger inter particle forces between an iron piece and a chalk piece is :

The matter that has stronger inter particle forces between an iron piece and a chalk piece is :

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Water contains 88.89% of A by weight is decomposed into its elements B and oxygen. Pure C is a poor conductor of electricity and hence it is acidified using dilute sulphuric acid. When electric current is passed through acidiluted water, using platinum electrodes, hydrogen gas is evolved at cathode and oxygen gas is evolved at anode.
What is ‘A’?

Water contains 88.89% of A by weight is decomposed into its elements B and oxygen. Pure C is a poor conductor of electricity and hence it is acidified using dilute sulphuric acid. When electric current is passed through acidiluted water, using platinum electrodes, hydrogen gas is evolved at cathode and oxygen gas is evolved at anode.
What is ‘A’?

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The apparatus shown in the picture is used to determine

The apparatus shown in the picture is used to determine

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From the diagram it is clear that air contains

From the diagram it is clear that air contains

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Water in wells can be purified by adding this to it :

Water in wells can be purified by adding this to it :

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The salts of _____ do not cause hardness of water :

The salts of _____ do not cause hardness of water :

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Light a candle and observe its flame, you will find that it is spindle-shaped and has different colours in different regions. The flame has three main zones depending on the amount of air it receives.
Which zone is least hot zone

Light a candle and observe its flame, you will find that it is spindle-shaped and has different colours in different regions. The flame has three main zones depending on the amount of air it receives.
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What does this experiment show?

What does this experiment show?

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