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The chemical formula for sulphurous acid is:

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Important Questions on Chemistry

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DRDO MTS Tier - II
IMPORTANT
General Science for Competitive Exams>Chapter 2 - Chemistry>MCQs>Q 136
The temperature at which solid melts to become a liquid at the atmospheric pressure is called its _____.
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DRDO MTS Tier - II
IMPORTANT
General Science for Competitive Exams>Chapter 2 - Chemistry>MCQs>Q 137
_____ is made by mixing iron with carbon and metals like chromium, nickel and manganese.
EASY
DRDO MTS Tier - II
IMPORTANT
General Science for Competitive Exams>Chapter 2 - Chemistry>MCQs>Q 138

Which of the following adds/add nitrogen to the soil?

I. Excretion of urea by animals

II. Burning of coal by man

III. Death of vegetation

Select the correct answer using the codes given below:

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DRDO MTS Tier - II
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General Science for Competitive Exams>Chapter 2 - Chemistry>MCQs>Q 139

Photochemical smog is a resultant of the reaction among _____.

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DRDO MTS Tier - II
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General Science for Competitive Exams>Chapter 2 - Chemistry>MCQs>Q 140
Which of the following has zero electron affinity?
HARD
DRDO MTS Tier - II
IMPORTANT
General Science for Competitive Exams>Chapter 2 - Chemistry>MCQs>Q 141
Which one of the following does not contain silver?
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DRDO MTS Tier - II
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General Science for Competitive Exams>Chapter 2 - Chemistry>MCQs>Q 145
The percentage of nitrogen present in ammonium sulphate is:
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DRDO MTS Tier - II
IMPORTANT
General Science for Competitive Exams>Chapter 2 - Chemistry>MCQs>Q 146
Solids that conduct electricity at a higher temperature but not at a lower temperature are called: