Question: Who invented radar? A. Fred Morrison B. A H Taylor and Leo C Young C. Van Tassel D. W. K. Roentgen Answer» b. A H Taylor and Leo C Young Note: The above multiple-choice question is for all general…

Question: Pasteurisation of milk means – A. heating of milk to above 72°C B. heating of milk to above 62°C C. cooling of milk to about 62°C D. cooling of milk to about 10°C Answer» b. heating of milk to…

Question: The most abundant element in the human body is – A. carbon B. iron C. nitrogen D. oxygen Answer» d. oxygen Note: The above multiple-choice question is for all general and Competitive Exams in India. 

Question: Impure camphor is purified by – A. sublimation B. fractional crystallisation C. fractional distillation D. steam distillation Answer» a. sublimation Note: The above multiple-choice question is for all general and Competitive Exams in India. 

Question: Greenhouse effect is caused by – A. nitrogen B. carbon dioxide C. carbon monoxide D. nitrogen dioxide Answer» b. carbon dioxide Note: The above multiple-choice question is for all general and Competitive Exams in India.