Chemistry Questions for SSC CHSL & RRB NTPC EXAM

Q1. Which gas is responsible for the swelling of bread?
(a) Oxygen 
(b) Carbon monoxide
(c) Carbon dioxide 
(d) Ammonia

Q2. The metal compound commonly found in Sindhoor or Kumkum is based on
(a) Tin 
(b) Lead
(c) Copper 
(d) Zinc


Q3. Which among the following elements (metals) pollutes the air of a city having a large number of automobiles?
(a) Cadmium 
(b) Lead
(c) Chromium 
(d) Nickel


Q4. Which one among the following is used as a moderator in nuclear reactors?
(a) Ozone 
(b) Heavy hydrogen
(c) Heavy water 
(d) Hydrogen peroxide


Q5. What is a mixture of potassium nitrate, powdered charcoal and sulphur called?
(a) Glass 
(b) Cement
(c) Paint 
(d) Gun powder


Q6. Alum is used as
(a) an analgesic 
(b) a fertilizer
(c) a disinfectant 
(d) a purifier for water


Q7. In surgery, metal pins are used for joining together broken bones. These metal pins remain uncorroded in the body. What is the material of these pins?
(a) Copper 
(b) Iron
(c) Aluminium 
(d) Titanium


Q8. Human stomach produces acid ‘X’ which helps in digestion of food. Acid ‘X’ is
(a) acetic acid 
(b) methanoic acid
(c) hydrochloric acid 
(d) citric acid


Q9. An ideal gas is one which obeys
(a) Gas laws 
(b) Boyle’s laws
(c) Charle’s law 
(d) Avogadro’s law


10. The enzymes are killed
(a) at a very high temperature
(b) during chemical reaction
(c) at low temperature
(d) under atmospheric pressure


Q11. Which has maximum calorific value?
(a) Fat 
(b) Protein
(c) Carbohydrate 
(d) Amino acid


Q12. In which type of coal percentage of carbon is the highest?
(a) Peat 
(b) Lignite
(c) Bituminous 
(d) Anthracite


Q13. Blood cells do not shrink in blood because blood is
(a) hypertonic 
(b) isotonic
(c) equimolar 
(d) hypotonic


Q14. The gas which emits from rice field is
(a) ethane 
(b) methane
(c) nitrogen 
(d) All of the above


Q15. The nuclear fuel in the sun is
(a) helium 
(b) hydrogen
(c) uranium 
(d) alpha particles


                                                     







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