Practice Objective questions - general science mcq Online Quiz (set-1) For All Competitive Exams
Q-1) Which of the following is a measure of organic pollution of water –
(a)
(b)
(c)
(d)
Q-2) The polymeric fibre used as a substitute for wool in making synthetic blankets, sweaters, etc., is
(a)
(b)
(c)
(d)
Q-3) What is a mixture of potassium nitrate, powdered charcoal and sulphur called ?
(a)
(b)
(c)
(d)
Q-4) Among the following statements, - Minamata disease is caused by mercury.
- Carbon monoxide is carcinogenic, so it is harmful to human beings.
- Sewage waste is non-biodegradable pollutant.
Select the incorrect ones:
(a)
(b)
(c)
(d)
Carbon monoxide is harmful to human beings because of its high affinity towards haemoglobin, the red pigment of blood.
Q-5) The non-viable particulate is among the following is
(a)
(b)
(c)
(d)
Dust
Q-6) Which of the following substances is/are ozone depleting?
- Chlorofluorocarbons
- Halons
- Carbon tetrachloride
Select the correct answer from the codes given below:
(a)
(b)
(c)
(d)
All three substances are responsible for ozone layer depletion in different ways. Which are:
CFC - is mostly used in refrigeration, air conditioning and heat pump systems.
Halons - used historically as fire suppression agents and fire fighting, but now only allowed in very limited situations.
Carbon tetrachloride (tetrachloromethane) - limited solvent use in laboratories and chemical and pharmaceutical industries.
Q-7) The gas leaked from a storage tank of the Union Carbide plant in Bhopal gas tragedy was
(a)
(b)
(c)
(d)
Methyl isocyanate, CH3 – N = C = O
Q-8) Which one of the following correctly defines the state of glass?
(a)
(b)
(c)
(d)
Q-9) The type of pollution caused by spraying of DDT
(a)
(b)
(c)
(d)
DDT causes water, air and soil pollution.
Q-10) Which one of the following chemicals is used in beauty parlours for hair-setting? [NDA]
(a)
(b)
(c)
(d)