By: D.K Choudhary
Q 1. Which one of the following gases is supporter of combustion ?
(A) Hydrogen (B) Nitrogen
(C) Carbon dioxide (D) Oxygen
Q 2.which of the following methods is/are suitable for soil conservation in hilly region ?
(i) Teraracing and contour bunding
(ii) Shifting cultivation
(iii) Contour ploughing
Select the correct answer using the code give below.
(A) 1 and 3 only (B) 2 only
(C) 3 only (D) 1,2 and 3
Q 3. National Biodiversity Authority is located at ?
Q 4. What causes dough (a mixture of flour, water, etc) to rise when yeast is added to it ?
(A) an increase in the temperature
(B) An increase in the amount of the substance
(C) An increase in the number of yeast cells
(D) Release of carbon dioxide gas
Q 5. The rapidly growing mss of phytoplankton covering the surface water of a lake or pond is known as ?
(A) Water pollution (B) Water hyacinth
(C) Eutrophication (D) Water bloom
Q 6. Biodiversity is richer in ?
(A) tropical regions (B) polar regions
(C) temperate regions (D) oceans
Q 7. Which one of the following is correctly matched ?
(A) Producer – Deer (B) Primary consumer – Leopard
(C)Decomposer – Bacteria (D) Secondary consumer – Grass
Q 8.The deciduous tree wall ?
(A) synthesise their own food
(B) depend on others for their food
(C) shed their leaves every year
(D) not lose their leaves
Q 9. Which method of water purification does not kill microorganism ?
(A) Boiling (B) Filtration
(C) Chlorination (D) UV-irradiation
Q 10. Nitric oxide pollution can lead to all of the following, except ?
(A) leaf spotting in plants
(B) bronchitis-related respiratory problems in human
(C) production of corrosive gases
(D) silicosis in human