WBCS Prelims 2014 General Science Question and Solution



   In West Bengal Civil Service (WBCS) Preliminary Examination 2014, total 26 questions was asked from  General Science.

1. Compound microscope has

[A]  Two lenses      

[B]  Requires UV light source

[C]  Used to view only dead organisms       

[D] Requires large room space

Correct Answer: [A]  Two lenses      

2. The digested food is absorbed in

[A]  Stomach

[B]  Intestine (small)       

[C]  Intestine (large)       

[D]  Colon

Correct Answer: [B]  Intestine (small)       

3. Rhizome is a modified stern because

[A]  It grows vertically upward in the soil and it has fleshy leaves

[B]  It has nodes and it has eyes which bears germinating buds

[C]  Its stem is highly condensed and disc like

[D] It has nodes, internodes and has brown, scaly leaves

Correct Answer: [D] It has nodes, internodes and has brown, scaly leaves

4. The longest cell in animals is

[A]  Nerve cell       

[B]  Hepatocyte (Liver cell)        

[C]  Blood cell       

[D] Muscle cell

Correct Answer: [A]  Nerve cell       

5. The identifying features of carrot roots are

[A]  Conical with small roots

[B]  Conical without small roots

[C]  Round with small roots

[D] Irregular with no small roots

Correct Answer: [A]  Conical with small roots

6. Which one of the following is a medium range missile ?

[A]  Akash 

[B]  Prithvi 

[C]  Agni      

[D] Brahmos

Correct Answer: [A]  Akash 

7. Which of the rays is most dangerous?

[A]  Alpha ray       

[B]  Beta ray        

[C]  Gama ray       

[D] X-ray

Correct Answer: [C]  Gama ray       

8. Light year is a unit of

[A]  Time

[B]  Distance 

[C]  Light    

[D] Intensity of light

Correct Answer: [B]  Distance 

9. The stage of mitosis in which chromosomes become V,  J, L or I shaped ?

[A]  Prophase    

[B]  Metaphase   

[C]  Anaphase 

[D] Telophase

Correct Answer: [C]  Anaphase 

10. RADAR is used for

[A]  Locating submerged submarines

[B]  Receiving signals in a radio receiver

[C]  Locating geostationary satellites

[D] Detecting and locating the position of objects such as aeroplane

Correct Answer: [D] Detecting and locating the position of objects such as aeroplane

11. Sound waves in air are

[A]  Transverse

[B]  Longitudinal 

[C]  Electromagnetic 

[D] Polarized

Correct Answer: [B]  Longitudinal 

12. LCD stands for

[A]  Liquid Crystal Display       

[B]  Low Current Display

[C]  Light Circuit Display       

[D] None of the above

Correct Answer: [A]  Liquid Crystal Display       

13. The most malleable metal is

[A]  Platinum  

[B]  Silver 

[C]  lron

[D] Gold

Correct Answer: [D] Gold

14.Basically domestic electric wiring is a

[A]  Parallel connection       

[B]  Series connection

[C]  Combination of series and parallel connections       

[D] None of the above

Correct Answer: [A]  Parallel connection       

15. The heat required to raise the temperature of a body by 1K is called

[A]  Specific heat        

[B]  Thermal capacity       

[C]  Water equivalent       

[D] None of the above

Correct Answer: [A]  Specific heat        

16. The most abundant rare gas in the atmosphere is

[A]  Helium

[B]  Neon

[C]  Argon

[D] Xenon

Correct Answer: [C]  Argon

17. Washing soda is the common name for

[A]  Sodium carbonate       

[B]  Calcium carbonate       

[C]  Sodium bicarbonate       

[D] Sodium hydroxide

Correct Answer: [A]  Sodium carbonate       

18. The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind ?

[A]  1/6        

[B]  1/3        

[C]  1/8       

[D] ]   1/4

Correct Answer: [C]  1/8       

19. Optical fiber works on the

[A]  Principle of Refraction       

[B]  Total Internal Reflection       

[C]  Scattering  

[D] Reflection

Correct Answer: [B]  Total Internal Reflection       

20. The number of electrons present in H+ is

[A]  Zero 

[B]  One

[C]  Two

[D] Three

Correct Answer: [A]  Zero 

21. Which one of the following is a protein deficiency disease ?

[A]  Pellagra  

[B]  Ricket   

[C]  Kwashiorkor 

[D] Retinoblastoma

Correct Answer: [C]  Kwashiorkor 

22. Which disease is caused by fungus?

[A]   Polio       

[B]  Malaria  

[C]  Dermatitis

[D] Cholera

Correct Answer: [C]  Dermatitis

23. Clove is obtained from

[A]  Root 

[B]  Stem

[C]  Leaf   

[D] Flower bud

Correct Answer: [D] Flower bud

24. Which one of the following is not a true fruit?

[A]  Date   

[B]  Plum  

[C]  Apple 

[D] Grape

Correct Answer: [C]  Apple 

25. AIDS is caused by

[A]  Bacteria 

[B]  Virus

[C]  Protozoa

[D]  Helminth

Correct Answer: [B]  Virus

26. Monocotyledonous plants show which of the following feature ?

[A]  Leaf shows reticulate venation        

[B]  Tap root system

[C]  Flowers are timorous        

[D] Perennial growth

Correct Answer: [C]  Flowers are timorous        

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