Free Online Practice Gk test general Science

Free Online Practice Gk test general Science
Free Online General Knowledge Preparation Test Containing Basic Questions on general Science
1. Rusting of iron is due to formation of-
(a) Ferric hydroxide
(b) Hydrated ferrous oxide
(c) Hydrated ferric oxide
(d) Ferrous oxide
(e) None of these
Answer. (a)

2. The enzyme found in the saliva is-
(a) Ptylin
(b) Pepsin
(c) Maltase
(d) Lipase
(e) Amylase
Answer. (a)

3. Diabetes incipidus is caused due to the
Deficiency of-
(a) Insulin
(b) Anti-diuretic hormone (ADH)
(c) Glucagon
(d) Thyroxine
(e) ASH
Answer. (b)


4. A new galaxy known as Carina Dwarf has
Been discovered by-
(a) Dr. Russell Cannon of Britain
(b) Dr. Raja Rammana of India
(c) A Russian scientist
(d) A Swiss scientist
(e) An Italian scientist
Answer. (a)

5. Anaemia in man is caused due to the
Deficiency of-
(a) Vitamin C
(b) Vitamin B12
(c) Vitamin A
(d) Folic acid
(e) Vitamin D
Answer. (b)

6. What is the chemical name for Vitamin B1?
(a) Glycodin
(b) Cholesterol
(c) Glucose
(d) Thiamine
(e) Riboflavine
Answer. (d)

7. Chloromycetin is obtained from-
(a) Streptomyces griseus
(b) Streptomyces venezuelae
(c) Acetobacter aceti
(d) Aspergillus Niger
(e) All of these
Answer. (b)

8. The substance which acts as a strong
Bleaching agent and disinfectant is-
(a) Bromine
(b) Iodine
(c) Chlorine
(d) Fluorine
(e) Astatine
Answer. (c)

9. Which was the first country whose scientists
Succeeded in fertilizing the human embryo in the test-tube?
(a) U. S. A.
(b) U.S.S.R.
(c) U. K.
(d) India
(e) China
Answer. (c)

10. Which is the only mammal which can fly?
(a) Whale
(b) Snake
(d) Hen
(d) Lizard
(e) Bat
Answer. (e)

11. The equivalent of Watt can be expressed
In-
(a) Foot-pounds
(b) Foot-pounds per second
(c) Pounds per square inch
(d) Calories
(e) Volts
Answer. (b)

12. Plants are killed in winter by frost because-
(a) Water expands and breaks the cells
(b) Water in the plants freezes
(c) Of desication
(d) N0 photosynthesis at low temperature
(e) None of these
Answer. (c)

13. The outer most layer of epidermis is-
(a) Stratum germinatum
(b) Stratum lucidium
(c) Stratum granulosum
(d) Stratum corneum
(e) None of these
Answer. (d)

14. Why is rotation of crops essential?
(a) For increasing the quantity of minerals
(b) For increasing the quantity of proteins
(c) For getting different kinds of crops
(d) For increasing fertility of the soil
(e) For all the above purposes
Answer. (d)

15. Most of the atmospheric nitrogen in nature
Is fixed by-
(a) Prokaryotes
(b) Anabaena
(c) Green plants
(d) Azotobacter
(e) All of these
Answer. (a)

16. What is the lowest frequency we can hear
About?
(a) 2000 vibrations per second
(b) 20O vibrations per second
(c) 100 vibrations per second
(d) 20 vibrations per second
(e) 500 vibrations per second
Answer. (d)

17. Soft water is used in industrial operations
Because-
(a) It is a better conductor
(b) It boils at a lower temperature
(c) It leaves less mineral deposits as scales
(d) It has less living organisms
(e) It tastes better
Answer. (c)
18. An element used as a semi-conductor in transistor is-
(a) Chromium
(b) Silicon
(c) Germanium
(d) Gold
(e) Copper
Answer. (c)

19. As a person becomes older, his blood pressure generally-
(a) Decreases sharply
(b) Increases
(c) Varies widely
(d) Remains the same
(e) Decreases
Answer. (b)

20. Which is the most malleable and ductile of all metals?
(a) Gold
(b) Silver
(C) Aluminum
(d) Tungsten
(e) Platinum
Answer. (a)


21. Laws of heredity were enunciated by-
(a) Charles Darwin
(b) Herbert Spencer
(c) Lamarck
(d) A. C. Benson
(e) Gragor Mendel
Answer. (e)

22. The length of night on Venus is-
(a) 180 earth days
(b) 135 earth days
(c) 118 earth days
(d) 50 earth days
(e) 3O earth days
Answer. (c)

23. Low melting point alloys usually contain
Lead and-
(a) Zinc
(b) Copper
(c) Mercury
(d) Aluminium
Answer. (d)
24. Hepatitis is a disease of the-
(a) Eyes
(b) Liver
(C) Kidney
(d) Heart
(e) Brain
Answer. (b)

25. Which of the following is not concerned
With lungs?
(a) Respiration
(b) Pneumonia
(c) Pulmonary tuberculosis
(d) Purification of blood
(e) Epilepsy
Answer. (e)