Practice Practice test - general science mcq Online Quiz (set-1) For All Competitive Exams
Q-1) Which one of the following acids is used for etching glass?
(a)
(b)
(c)
(d)
Q-2) The greatest affinity for haemoglobin is shown by which of the following :
(a)
(b)
(c)
(d)
Explanation:
Haemoglobin has great affinity for NO.
Q-3) Which of the following is not involved in the formation of photochemical smog?
(a)
(b)
(c)
(d)
Explanation:
Photochemical smog does not involve SO2 .
Q-4) Which of the following gas causes pollution –
(a)
(b)
(c)
(d)
Explanation:
Q-5) Which one of the following polymeric materials is used for making bullet proof jacket?
(a)
(b)
(c)
(d)
Q-6) The layer which reflects radio signals back to earth is –
(a)
(b)
(c)
(d)
Q-7) The pollutants which came directly in the air from sources are called primary pollutants. Primary pollutants are sometimes converted into secondary pollutants. Which of the following belongs to secondary air pollutants?
(a)
(b)
(c)
(d)
Q-8) What is the role of ultraviolet (UV) radiation in the water purification system? - It inactivates / kills the harmful micro-organisms in water.
- It removes all the undesirable odours from the water.
- It quickens the sedimentation of solid particles and improves the clarity of water.
Which of the statements given above is/are correct?
(a)
(b)
(c)
(d)
Explanation:
It inactivates/kills the harmful micro-organisms in water.
Q-9) Which of the following gases is not a green house gas?
(a)
(b)
(c)
(d)
Q-10) Chipko movement is concerned with –
(a)
(b)
(c)
(d)