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The contractile protein of skeletal muscle involving ATPase activity is:
Doctors use a stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when:
Identify the human development stage and its correct site of occurrence in a normal pregnant woman:
Which one of the following pairs of species have the same bond order?
Arteries are best defined as the vessels which:
From Ampere's circuital law, for a long straight wire of circular cross-section carrying a steady current, the variation of the magnetic field inside and outside the region of the wire is:
The half-life of a radioactive sample undergoing $\alpha$-decay is $1.4 \times 10^{17}\text{ s}$. If the number of nuclei in the sample is $2.0 \times 10^{21}$, the activity of the sample is nearly equal to:
Which of the following is not the product of dehydration of the given alcohol?
Figure shows a schematic plan of blood circulation in humans with labels A to D. Identify the label and give its function/s.
Signals from fully developed foetus and placenta ultimately lead to parturition which requires the release of:
Which of the following approaches does not give the defined action of contraceptive?
If the nuclear radius of $^{27}\text{Al}$ is 3.6 Fermi, the approximate nuclear radius of $^{64}\text{Cu}$ in Fermi is:
The half-life of a radioactive substance is 30 minutes. The time (in minute) taken between 40% decay and 85% decay of the same radioactive substance is:
Which one of the following experiments of Frederick Griffith resulted in the discovery of bacterial transformation?
Which one of the following ions has electronic configuration [Ar]3d⁶? (At. no: Mn = 25, Fe = 26, Co = 27, Ni = 28)
What is true for IUDs? I: They are self-inserted II: They are inserted by expert nurses III: They may be non-medicated IUDs, copper releasing IUDs or hormone releasing IUDs. IV: They are the one of the most widely accepted contraceptives in India. V: They are inter-uterine devices
An n-p-n transistor is connected in the common base configuration in a given amplifier. A load resistance of $800\, \Omega$ is connected in the collector circuit and the voltage drop across it is $0.8\text{ V}$. If the current amplification factor is $0.96$ and the input resistance of the circuit is $192\, \Omega$, the voltage gain and the power gain of the amplifier will respectively be:
A simple pendulum performs simple harmonic motion about $x = 0$ with an amplitude $a$ and time period $T$. The speed of the pendulum at $x = rac{a}{2}$ will be:
The mean free path l for a gas molecule depends upon the diameter, d of the molecule as:
A rod of weight $w$ is supported by two parallel knife edges A and B and is in equilibrium in a horizontal position. The knives are at a distance $d$ from each other. The centre of mass of the rod is at distance $x$ from A. The normal reaction on A is: