Q1. The polymerization of which of the following is used in manufacturing of polythene in industry ?
(a) Methane
(b) Styrene
(c) Acetylene
(d) Ethylene
Q2. Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere ?
(a) Nitrous oxide
(b) Carbon dioxide
(c) Chlorofluorocarbon
(d) Sulphur dioxide
Q3. Which of the following is the main nitrogenous waste in humans ?
(a) Ammonia
(b) Urea
(c) Uric Acid
(d) Ammonium Nitrate
Q4. Aspirin is
(a) Methyl benzoic acid
(b) Methyl Salicilate
(c) Acetyl Salicilic acid
(d) Phenyl Salicilate
Q5. Cloud is a colloidal dispersion of
(a) Air in a dispersion medium of water
(b) Fog in a dispersion medium of water
(c) Mist in a dispersion medium of air
(d) Water drops in a dispersion medium of air
Q6. Which of the following is the petroleum wax ?
(a) Bees wax
(b) Carnauba wax
(c) Paraffin wax
(d) Jojoba wax
Q7. Which variety of coal contains recognizable traces of the original plant material ?
(a) Anthracite
(b) Lignite
(c) Peat
(d) Bitumen
Q8. Which is the purest form of iron ?
(a) Steel
(b) Cast iron
(c) Pig iron
(d) Wrought iron
Q9. Which of the following metals form an amalgam with other metals ?
(a) Lead
(b) Tin
(c) Zinc
(d) Mercury
Q10. Detergents used for cleaning clothes and utensils contain
(a) nitrates
(b) bicarbonates
(c) sulphonates
(d) bismuthates
Solutions
S1. Ans.(d)
S2. Ans.(c)
S3. Ans.(c)
S4. Ans.(c)
S5. Ans.(d)
S6. Ans.(c)
S7. Ans.(c)
S8. Ans.(d)
S9. Ans.(d)
S10. Ans.(c)
