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Question: If a vibrator strikes the water 10 times in one second, then the frequency of wave is _________. 1. 10 Hz 2. 0.5 Hz 3. 5 Hz 4. 0.1 Hz Answer: 1..

Question: Two bodies of equal mass are kept at a height of 'h' and '3h'. What is the ratio of their gravitational potential energies? Answer: Potential energy (P.E.) = mgh P.E. (1) = mgh P.E. (2) = mg3h \ P.E. (1) : P.E. (2) = 1 : ..

Question: What do you understand by 1) thermal decomposition 2) electrolytic decomposition? Answer: 1) Thermal decomposition is the breaking down of substances into simpler substances by the action of heat. 2) Electrolytic decomposition is the breaking down of substa..

Question: Calculate the amount of nitrogen supplied to soil by 1 quintal (100 kg) of ammonium nitrate (N=14, H=1, O=16). Answer: Molecular weight of NH 4 NO 3 = 14 + (4 x 1) + 14 + (16 x 3) = 80 g Molecular weight of N in the above formula = 14 x 2 = 28 ..

Question: The normal force per unit area is called _______. 1. pressure 2. thrust 3. balanced force 4. pascal Answer: 1..

Question: 1-propanol and 2-propanol are 1. chain isomers 2. position isomers 3. functional isomers 4. homologues Answer: ..

Question: Which mirror has a wider field of view? 1. Convex mirror 2. Concave mirror 3. Plane mirror 4. Cylindrical mirror Answer: 1..

Question: What is a 'phylogenetic' tree? Answer: Evolutionary change and relationships of related organisms are represented in "family trees," or 'phylogenetic' trees, which show the relationships among organisms to illustrate the idea that all of life is related. The trees will trace ev..

Question: Second ghost: Its all bob cratch it can afford. 1) Who is bob cratch it? What can be afford? 2) Does his family complain? 3) What is his reaction towards him employer? Hoe is it different from his wife's? Answer: 1) Bob cratch it is an underpaid clerk in..

Question: Which of these metals do not corrode? 1. Lead 2. Copper 3. Platinum 4. Silver Answer: ..