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Chemistry Practice Questions Set 11
For India's Top Government Exams
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Which of the following gases in the atmosphere is/are responsible for acid rains?
1. Oxides of sulfur
2. Oxides of nitrogen
3. Oxides of carbon
Select the correct answer using the codes given below
*
1 point
1 and 2
1 and 3
Only 2
1, 2 and 3
Why hard water does not give lather with soap?
*
1 point
Hard water contains calcium and magnesium ions which form a precipitate with soap
Hard water contains sulfate and chloride ions which form a precipitate
the pH of hard water is high
the pH of hard water is less
What is the role of a positive catalyst in a chemical reaction?
*
1 point
It increases the rate of reaction
It decreases the rate of reaction
It increases the yield of the products
It provides better purity of the products
Which one among the following gases readily combines with the hemoglobin of the blood?
*
1 point
Methane
Nitrogen dioxide
Carbon monoxide
Sulfur dioxide
Which one among the following metals is used in fireworks to make a brilliant white light?
*
1 point
Sodium
Magnesium
Aluminum
Silver
Which allotropy of carbon is in a rigid three-dimensional structure?
*
1 point
Graphite
Fullerene
Diamond
Carbon black
Match the following lists.
List l
(Agent)
A. Arsenic
B. Fluoride
C. Dust
D. Noise
List ll
(Disease)
1. Fluorosis
2. Melanosis
3. Presbycusis
4. Silicosis
*
1 point
A 3, B 1, C 4, D 2
A 3, B 4, C 1, D 2
A 2, B 1, C 4, D 3
A 2, B 4, C 1, D 3
Which one among the following is responsible for the expansion of water in the ocean?
*
1 point
Carbon dioxide
Nitrogen dioxide
Carbon monoxide
Sulfur dioxide
Food cans are coated with tin but not with zinc because
*
1 point
zinc is costlier than tin
zinc has a higher melting point than tin
zinc is more reactive than tin
tin is more reactive than zinc
Iodised salt is
*
1 point
a mixture of potassium iodide and common salt
a mixture of molecular iodide and common salt
a compound formed by the combination of potassium iodide and common salt
a compound formed by molecular iodine and common salt
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