Test Series no. -1
MCQ on Science for competitive exams
(Answer key on last page of Test series)
1- An emulsion is a colloid of a
(A) liquid in a liquid
(B) gas in a liquid
(C) liquid in a gas
(D) gas in a solid
2- Percentage of carbon in steel ranges from
(A) 0.1 to 1.5
(B) 1.5 to 3.0
(C) 3.0 to 4.0
(D) 4.0 to 6.0
3- Which of the following is not present in German silver?
(A) Copper
(B) Silver
(C) Nickel
(D) Zinc
4- Which is the anti coagulant substance in blood?
(A) Thrombin
(B) Fibrinogen
(C) Heparin
(D) Globin
5- The major harmful gas emitted by automobile vehicles which causes air pollution is ………………
(A) Carbon dioxide
(B) Ozone gas
(C) Methane
(D) Carbon monoxide
6-Jaundice is a symptom of disease of
(A) Kidney
(B) Liver
(C) Pancreas
(D) Thyroid
7- The vaccination against small pox involves the introduction of
(A) killed germs
(B) weakened germs
(C) live antibodies
(D) activated germs
8- Deficiency of vitamin B6 in man causes
(A) Beriberi
(B) Scurvy
(C) Anaemia
(D) Rickets
9- First successful heart transplantation was done by
(A) P. K Sen
(B) D. S Patel
(C) D. Shetty
(D) C. N. Barnard
10- Yellow fever is transmitted by
(A) Aedes
(B) Anopheles
(C)House fly
(D) Culex
11- Major Green House gas is
(A) Freon
(B) Carbon monoxide
(C) Chloro flurocarbon
(D) Carbon dioxide
12- Washing of peeled vegetables removes the vitamin
(A) E
(B) D
(C) A
(D) C
13- Pasteurization is the process in which milk is heated to
(A) 63o C for 30 minutes
(B) 60o C for 20 minutes
(C) 72o C for 10 minutes
(D) none of the above
14- Match the list 1 with list 2
| Discoverer Discoveries
a. Jenner 1. blood grouping b. Watson 2. penicillin c. Landsteiner 3. vaccination d. Flemming 4. double helix |
(A) a-1, b-2, c-3, d-4
(B) a-3, b-4, c-1, d-2
(C) a-4, b-3, c-2, d-1
(D) a-2, b-1, c-3, d-4
15- Which of the following is most elastic?
(A) Steel
(B) Wet clay
(C) Rubber
(D) None of the above
16- A man with colour blindness will see red as
(A) Blue
(B) Yellow
(C) Green
(D) Violet
17- When a person walking in bright sunlight enters a dark room he is not able to see clearly for a little while because
(A) The retina retains the bright images for sometime and becomes momentarily insensitive.
(B) The eye muscles cannot immediately adjust the focal length of the aye lenses.
(C) The iris is unable to contract the pupils immediately.
(D) The iris is unable to dilate the pupil immediately.
18- The swing of a spinning cricket ball in the air can be explained on the basis of
(A) Buoyancy of air
(B) Turbulence caused by wind
(C) Bernoulli’s theorem
(D) Sudden change in wind direction
19- The Freezer in a refrigerator is fitted near the top
(A) to keep it away from hot compressor which is nearer to the bottom
(B) because of convenience
(C) it facilitates convection currents
(D) none of the above
20- The chemical name of common salt is
(A) Calcium Chloride
(B) Ammonium chloride
(C) Sodium nitrate
(D) Sodium chloride