Q41. The princely state of Jhansi was made a part of the British Empire in India in-
(A) Through the policy of subsidiary treaty
(B) Through war against Rani Lakshmibai
(C) Through state kidnapping policy
(D) None of the above
(C) Through state kidnapping policy
Q42. From where did Mahatma Gandhi start his Dandi March?
(A) Ahmedabad
(B) Sabarmati Ashram
(C) Dandi
(D) Porbandar
(B) Sabarmati Ashram
Q43. Which type of lake is formed by volcanic activity?
(A) Lagoon
(B) Lake of clean (fresh) water
(C) Caldera lake
(D) Karst lake
(C) Caldera lake
Q44. The well from which water comes out through hydraulic pressure is called-
(A) Deep tube well
(B) Artesian well
(C) Ordinary well
(D) Tube well
(B) Artesian well
Q45. ‘Laughing gas’ is-
(A) Nitrogen trioxide
(B) Nitrogen pentoxide
(C) Nitric oxide
(D) Nitrous oxide
(D) Nitrous oxide
Q46. Clothes made of polyester dry quickly after washing because-
(A) is a water soluble material
(B) It absorbs heat quickly
(C) Water evaporates very quickly
(D) Polyester absorbs very little water
(D) Polyester absorbs very little water
Q47. Which of the following pairs is correctly matched?
(A) Pyrometer-Measuring the density of a liquid
(B) Pyrheliometer-Measuring high temperature
(C) Seismograph to record the intensity of earthquake tremors
(D) Pycnometer-Measuring solar radiation
(C) Seismograph to record the intensity of earthquake tremors
Q48. On compressing a gas-
(A) Both pressure and temperature increase
(B) pressure increases and temperature decreases
(C) only pressure increases
(D) Only the temperature increases
(A) Both pressure and temperature increase
Q49. The ozone layer in the upper part of the atmosphere acts as a protective shield against what?
(A) CO2 in the air
(B) SO₂ in air
(C) Harmful solar ultraviolet radiation
(D) Harmful and infrared radiations
(C) Harmful solar ultraviolet radiation
Q50. The only mammal that can fly is-
(A) Hen
(B) Lizard
(C) Whale
(D) Bat
(D) Bat