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Which one of the following fuels causes minimum environmental pollution?

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Important Questions on Chemistry

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IAS (PRE) General Studies Paper 1>Chapter 12 - Chemistry>Exercise 1>Q 6
Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance?
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IAS (PRE) General Studies Paper 1>Chapter 12 - Chemistry>Exercise 1>Q 7
The alpha particle carries two positive charges. Its mass is very nearly equal to that of _____.
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IAS (PRE) General Studies Paper 1>Chapter 12 - Chemistry>Exercise 1>Q 8
Which among the following is the most reactive halogen?
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IAS (PRE) General Studies Paper 1>Chapter 12 - Chemistry>Exercise 1>Q 9
Which one of the following has the highest fuel value?
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IAS (PRE) General Studies Paper 1>Chapter 12 - Chemistry>Exercise 1>Q 10
Which one of the following is used as an antifreeze for the automobile engines?
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IAS (PRE) General Studies Paper 1>Chapter 12 - Chemistry>Exercise 1>Q 11

Match list I with list II and select the correct answer using the codes given below the lists

List I List II
A. Potassium bromide
B. Potassium nitrate
C. Potassium sulphate
D. Monopotassium tartarate		 1. Fertiliser
2. Photography
3. Bakery
4. Gun powder

Codes:

A B C D

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IAS (PRE) General Studies Paper 1>Chapter 12 - Chemistry>Exercise 1>Q 12

Consider the following statements :
Coke is one of the materials of the charge added to blast furnace for the production of steel/iron. Its function is to
1. act as reducing agent.
2. remove silica associated with the iron ore.
3. function as fuel, to supply heat.
4. act as an oxidising agent.

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IAS (PRE) General Studies Paper 1>Chapter 12 - Chemistry>Exercise 1>Q 16
Consider the following statements about acetylene
1. It is used in the welding industry.
2. It is a raw material for preparing plastics.
3. It is easily obtained by mixing silicon carbide and water.