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 […]
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. […]
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 […]
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 […]
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 […]
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
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 – […]
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 […]
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