Chemistry-
General
Easy
Question
Elements of Group 17 are called
- Noble gases
- Halogens
- Alkali metals
- Transition metals
The correct answer is: Halogens
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Who gave the law of octaves?
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
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
Chemistry-General
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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 :
Chemistry-General
Chemistry-
The salts of _____ do not cause hardness of water :
The salts of _____ do not cause hardness of water :
Chemistry-General
Chemistry-
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.
Which zone is least hot zone
Chemistry-General
Chemistry-
What does this experiment show?
What does this experiment show?
Chemistry-General
Chemistry-
Students were carrying out an experiment in the laboratory, in which one of the steps involved heating the alcohol. However, the teacher strictly instructed the students not to heat alcohol directly on flame. Why do you think the teacher gave such an instruction?
Students were carrying out an experiment in the laboratory, in which one of the steps involved heating the alcohol. However, the teacher strictly instructed the students not to heat alcohol directly on flame. Why do you think the teacher gave such an instruction?
Chemistry-General
Chemistry-
When you introduce a glass plate into the luminous zone of a candle flame for a few seconds, the observation is as shown in figure
When you introduce a glass plate into the luminous zone of a candle flame for a few seconds, the observation is as shown in figure
Chemistry-General
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Which of the following is an ideal fuel?
Which of the following is an ideal fuel?
Chemistry-General
Chemistry-
Inflammable substances have an ignition temperature :
Inflammable substances have an ignition temperature :
Chemistry-General
