Electron microscopic studies of the sarcomeres have revealed that during muscle contraction Options (a) The width of A-band remains constant (b) The width of the H-zone becomes smaller (c) The width of I-band increases (d) […]
Megasporangium is equivalent to Options (a) fruit (b) nucellus (c) ovule (d) embryo sac Correct Answer: ovule Explanation: Megasporangium is the structure in certain spore bearing plants, in which the megaspore are forming. This megaspores […]
The molar specific heats of an ideal gas at constant pressure and volume are denoted by Cp and Cv, respectively. If γ = Cp/Cv and R is the universal gas constant, then Cv is equal […]
A piece of iron is heated in a flame. It first comes dull red then becomes reddish yellow and finally turns to white hot. The correct explanation for the above observation is possible by using […]
The wetability of a surface by a liquid depends primarily on Options (a) surface tension (b) density (c) angle of contact between the surface and the liquid (d) viscosity Correct Answer: angle of contact between […]
The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied? Options (a) length = 100 cm, diameter = 1 mm (b) […]
The condition under which a microwave oven heats up a food item containing water molecules most efficiently is Options (a) the frequency of the microwave must match the resonant frequency of the water molecules (b) […]
In the given (V – T) diagram, what is the relation between pressure P₁ and P₂? Options (a) P₂ > P₁ (b) P₂ < P₁ (c) Cannot be predicted (d) P₂ = P₁ Correct Answer: […]
The amount of heat energy required to raise the temperature of 1g of Helium at NTP, from T₁K to T₂K is Options (a) (3/2) Nₐkв (T₂ – T₁) (b) (3/4) Nₐkв (T₂ – T₁) (c) […]
For the normal eye, the cornea of eye provides a converging power of 40D and the least converging power of the eye lens behind the cornea is 20D. Using this information, the distance between the […]
2017 Copyright Doctor Dreams Training Academy