General Science-3 –Learning

Most frequently asked General science (Biology/Physics/Chemistry) questions in competitive examinations:

Q.1. DBMS used for building computer applications stands for …

Ans. Database Management System

Q.2. Herman Hollerith had perfected his tabulating system and developed a machine called…

Ans. Census Tabulator

Q.3. Araneology is …..

Ans.  Study of spiders

Q.4 The loss of water in the form of water droplets is called…..

Ans.  Guttation

Q.5. The male sex hormone is…

Ans. Testosterone

Q.6. Which reason is responsible for lack of vegetation in the deserts?

Ans.  Lack of rainfall

Q.7. What does “Corpus luteum” secrete ?

Ans.  Progesterone

Q.8.  The branch of medicine involving synthetic chemical compounds is….

Ans.    Allopathy

Q.9.  Arsenic problem in India is primarily due to

A.    Overexploitation of ground water in the affected areas

Q.10 Which is an egg-laying mammal…..

Ans.   Duck-billed platypus

Q.11.  Euphenics is….

Ans.  Treatment of defective heredity through genetic engineering

Q.12. The type of kidneys present in frog are….

Ans.   Mesonephros.

Q.13   Which is an abiotic factor?

Ans.  Moisture

Q. 14  What are the folds found in the mucous lining of the empty stomach?

Ans.   Rugae

Q.15  Pleura is the covering of…..

Ans.   Lung

Q.16. Medicine of Quinine is provided by….

Ans. Cinchona plant

Q.17.  Leaves of many grasses are capable of folding and unfolding because…

A.  they have specialized bulliform cells

Q.18.  Absorption of water from cut ends of stems disproves the…

Ans.  Root pressure theory

Q.19. The total energy of an electron inside an atom is….

Ans.  less than zero

Q.20. A seconds pendulum is a pendulum whose time period is….

Ans. 2 seconds

Q.21. A spinning neutron star is known as….

Ans.   Pulsar

Q.22.  Light year is a unit of….

Ans.  Distance.

Q.23. The moderator used in a nuclear reactor is…..

Ans.  Graphite

Q.24.  A jug is filled to the brim with water at $$0^0$$ C. A piece of ice floats in it. The moment the ice melts,….

Ans.  water level is unchanged

Q.25.  The velocity of light is……

Ans.  3 x $$10^8$$ m/sec.

Q.26. Which metal is used in pencils?

Ans. Graphite

Q.27. The rusting of metal iron in air needs both…

Ans.  Oxygen and moisture

Q.28. Hydrogen was discovered by….

Ans.   Cavendish

Q.29. Iodine test is used to detect….

Ans.    Carbohydrate

Q.30  Which gases react to produce urea?

Ans.  Carbon dioxide + Ammonia
 

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