List of practice Questions

The point $(-2, -3, -4)$ lies in the
The point $(2t^2 + 2t + 4, t^2 + t + 1)$ lies on the line x + 2y = 1 for
The plant cell shrink when placed in a
The plant groups proposed by Aristotle in his classification were
The plane XOZ divides the join of $(1, -1, 5) $ and $(2, 3, 4)$ in the ratio $\lambda :1$ then $\lambda$ is
The plane passing through the point (-2, -2, 2) and containing the line joining the points (1, 1, 1) and (1, -1, 2) makes intercepts on the coordiantes axes, the sum of whose lengths is
The pitch of a screw gauge is $0.5\, mm$ and there are $100$ divisions on it circular scale. The instrument reads $+2$ divisions when nothing is put in between its jaws. In measuring the diameter of a wire, there are $8$ divisions on the main scale and $83^{rd}$ division coincides with the reference line. Then the diameter of the wire is
The $_pK_a$ of acetylsalicylic acid (aspirin) is $3.5$.The $H$ of gastric juice in human stomach is about $2.3$ and the $pH$ in the small intestine is about $8$. Aspirin will be
The piston in the cylinder head of a locomotive has a stroke of $6 \,m$. If the piston executing simple harmonic motion with an angular frequency of $200 \,rad\, min^{-1}$ , its maximum speed is
The physical quantity which has dimensional formula as that of $\frac{Energy}{Mass \,\times\, Length}$ is
The picture below shows three different types of plants (marked as P-I, P-II and P-III) which flower on the basis of their critical photoperiod. Now identify these plants (P-I, II and III).
The physical quantity that has no dimensions is:
The phenomenon in which adsorption and absorption takes place simultaneously is called
The photoelectric current can be increased by
The photoelectric cut off voltage in a certain experiment is $1.5\, V$. The maximum kinetic energy of photoelectrons emitted is
The physical quantity having the same dimensional formula as that of entropy is :
The phase difference between velocity and acceleration of simple harmonic oscillator.
The phase of shortest duration in mitosis is
The pH range for phenolphthalein is
The pH value of 0.001 M aqueous solution of NaCl is
The pH of human urine is approximately
The pH of neutral water is 6.5,then the temperature of water is
The $pH$ of succus entericus is
The pH of tears coming out of a person's eye is approximately
The pH of a 0.1 M aqueous solution of $NH_4OH$ is : $(K_b = 1.0 \times 10^{-5})$