Chemistry Important Questions For Railway Exam – Group-D and RRB ALP Set – 2:
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Why is Compressed Natural Gas (CNG) considered as eco- friendly ?
a) It has very low quantity of hydro -carbons
b) Its main content (80-90%) is Ethane gas
c) It has very low carbon monoxide
d) Gases present in CNG do not burn fully hence emission remain low
e)None of these
The main element in the ‘Cattle Bone Powder’ is
Which compound is used in Fertiliser?
a) Sodium bicarbonate
b) Calcium Nitrate
c) Potassium Nitrate
d) Sodium Nitrate
What is the chemical formula for laughing gas?
In the periodic table elements what is the symbol of Potassium?
Due to the presence of which gas, does Brass get discoloured in air?
c) Carbon dioxide
d) Hydrogen Sulphide
Chemical reactions that release energy by light or heat are called …
a) Endothermic Reaction
b) Redox Reaction
c) Exothermic Reaction
d) Ectothermic Reaction
What is the ph value of blood?
Which of the following gases is found in the largest quantity in atmosphere?
The main chemical constituent of clay is
a) silicon oxide
b) aluminum silicate
c) potassium zeolite
d) carbon dioxide
Solutions 1 to 10
1) Answer (c)
2) Answer (b)
3) Answer (c)
4) Answer (d)
5) Answer (c)
6) Answer (d)
7) Answer (c)
8) Answer (b)
9) Answer (a)
10) Answer (b)
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