25 GK questions and answers in english | Important gk questions for RRB NTPC and Group D

25 GK questions and answers in english | Important gk questions for RRB NTPC and Group D | Part 2

Railway NTPC and Group D GK

In this video All Exam GK Support give you 25 gk questions and answers in english for any competitive exams. Most important gk questions for RRB NTPC and Group D are collected. Many of these general knowledge questions came on previous railway exams. We collect lucent gk, history gk, geography gk, polity gk, economic gk, computer gk together. Watch the full video of GK Questions by All Exam GK Support. Friends please subscribe my channel for more letest update.

Q1. Which of the following wavelengths is the most effective in photosynthesis ?

A) Blue

B) Green

C) White

D) All are equally effective

Ans: B

Q2. To an astronaut the outer space appears to be

A) Blue

B) White

C) Black

D) Red

Ans: C

Q3. Due to the which of the following phenomena mirages are seen ?

A) Interference of light

B) Total internal reflection of light

C) Scattering of light

D) Double refraction of light

Ans: B

Q4. The imaginary lines parallel to Equator are called

A) Latitudes

B) Longitudes

C) Isobars

D) Isotherms

Ans: A

Q5. Where is the headquarters of the World Bank, which is also called “International Reconstruction and Development Bank situated ?

A) New York

B) Paris

C) Zenava

D) Washington

Ans: D

Q6. Conservation of energy means

A) Energy can be created and destroyed

B) Energy can be created but can not be destroyed

C) Energy can not be created but can be destroyed

D) Energy can neither be created nor be destroyed

Ans: D

Q7. Which of the following is not a part of human eye ?

A) Femur

B) Iris

C) Pupil

D) Retina

Ans: A

Q8. The word “Mach” is used to measure

A) Sound

B) Air

C) Ships

D) Aeroplanes

Ans: D

Q9. When velocity of a body is doubled, its kinetic energy is

A) doubled

B) halved

C) quadrupled

D) one - fourth

Ans: C

Q10. Which of the following has the equal atomic number and atomic weight ?

A) Hydrogen

B) Helium

C) Oxygen

D) Nitrogen

Ans: A

Q11. The colour of milk of cow is yellow due to the presence of

A) Keratin

B) Riboflavin

C) Ribulose

D) None of these

Ans: B

Q12. Which of the following disease is/are caused by a mutant gene ?

A) Haemophilia

B) Sickle Cell Anaemia

C) Thalassaemia

D) All of the above

Ans: D

Q13. How far into the sea do the territorial waters of India extend ?

A) 12 nautical miles

B) 6 nautical miles

C) 15 nautical miles

D) 10 nautical miles

Ans: A

Q14. All of the following disease are caused by virus, except:

A) Jaundice

B) Influenza

C) Typhoid

D) Mumps

Ans: C

Q15. The gland that contains the thermostat of the body is:

A) pineal

B) pituitary

C) thyroid

D) hypothalamus

Ans: D

Q16. The transport of organic substance in plants it through:

A) Fibres

B) Phloem

C) Xylem

D) Wood

Ans: B

Q17. Malaria can be cured from a drug extracted from :

A) Belladonna tree

B) Cinchona tree

C) Oak tree

D) Amaltas tree

Ans: B

Q18. Which of the following is not a parasite ?

A) Louse

B) Mosquito

C) Housefly

D) None of these

Ans: C

Q19. Hardness of water is caused by soluble salts of :

A) Sodium and Potassium

B) Potassium and Ammonium

C) Sodium and Calcium

D) Calcium and Magnesium

Ans: D

Q20. The deficiency of vitamin ‘A’ causes :

A) Hair to fall

B) Dysentery

C) Night Blindness

D) Weakness

Ans: C

Q21. Which of the following human disease is/are controlled by Heredity ?

A) Haemophilia

B) Leukemia

C) Anaemia

D) All of these

Ans: A

Q22. Cow milk is a rich source of :

A) Vitamin B

B) Vitamin A

C) Vitamin D

D) Vitamin K

Ans: C

Q23. 'Central Rice Research Institute of India’ is located in :

A) Kolkata

B) Cuttack

C) Bangalore

D) Mysore

Ans: B

Q24. Who among the following coined the term ‘Gene’ for factors controlling inheritance ?

A) Gregory Mendel

B) Hugo de Vries

C) T H Morgan

D) W Johansson

Ans: D

Q25. Mahmud of Gazni attacked India first in the year

A) 1004

B) 1001

C) 1000

D) 999

Ans: B

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