Q1. Which of the following is an iron ore?
(a) Bauxite
(b) Magnetite
(c) Lignite
(d) Nitrite
Q2. Which among the following is liquid non-metal?
(a) Mercury
(b) Bromine
(c) Water
(d) Alcohol
Q3. Which one of the following is used in making pencils?
(a) Graphite
(b) Bone black
(c) Black ash
(d) None of these
Q4. Natural rubber is the polymer of which of the following?
(a) isoprene
(b) styrene
(c) butadiene
(d) ethylene
Q5. Bakelite is a co-polymer of phenol and ____________?
(a) formaldehyde
(b) acetaldehyde
(c) benzaldehyde
(d) cinnaldehyde
Q6. Which one of the following is used as preservative for foodstuff?
(a) Sodium benzoate
(b) Picric acid
(c) Glycerine
(d) Sodium chloride
Q7. The gas which turns limewater milky is
(a) carbon dioxide
(b) carbon monoxide
(c) ammonia
(d) nitrogen dioxide
Q8. Catalyst is a substance which
(a) increases the rate of the reaction
(b) decreases the rate of reaction
(c) has no action on the rate of the reaction
(d) None of the above
Q9. pH value between 6.5-7.5 makes the soil-
(a) basic
(b) alkaline
(c) acidic
(d) None of these
Q10. Fire-fighting clothes are made from which of the following?
(a) mica
(b) asbestos
(c) talc
(d) steatite
Q11. The major component in the LPG is
(a) methane
(b) butane
(c) propane
(d) Both (b) & (c)
Q12. Hydrogen is not found in atmosphere because
(a) it is highly inflammable
(b) it is the lightest gas
(c) it is absorbed by plants
(d) it immediately combines with oxygen to form water
Q13. Ozone consists of-
(a) oxygen only
(b) oxygen and nitrogen
(c) hydrogen and carbon
(d) oxygen and carbon
Q14. Galena is a mineral of which of the following?
(a) iron
(b) gold
(c) lead
(d) calcium
Q15. Mercury is a-
(a) solid metal
(b) liquid metal
(c) solid non-metal
(d) liquid non-metal
