List of practice Questions

The group 13 element that is liquid during summer and used for measuring high temperature is
The force $F$ is given by expression $F=A \cos (B x)+C \sin (D t)$, where $x$ is the displacement and $t$ is the time. Then dimension of $\frac{D}{B}$ are same as that of
The energy gap of silicon is $1 .1 4 \,eV$. The maximum wavelength at which silicon starts energy absorption, will be $(h = 6.62 \times 10^{-34}\, J\, s$; $c = 3 \times 10^8\, ms^{ -1})$
The distance between the two successive nodes is
The current passing through an inductor coil of 5H is decreasing at the rate of 2A/s, the emf developed across the coil is
The current and voltage in AC circuit are given by $ I=5\sin \left( 100t-\frac{\pi }{2} \right)A $ and $ V=200\sin (100t) $ volt. The power dissipated in the circuit will be
The age of pyramid with broad base indicates
The ability of d-block elements to form complexes is due to
Strength of $H_2O_2$ is $15.18\, g\, L^{-1}$, then it is equal to
Stinging capsules (nematocysts) are found in
Starch is a mixture of two components, a water soluble component amylose $(15-20\%)$ and a water insoluble component amylopectin $(80-85 \%)$. The aqueous solution of amylose gives a blue colour with iodine solution due to the formation of
Starting from the maximum, arrange the following male reproductive accessory organs in the correct order, based on the amount of secretion poured into urethra. (i) $\quad$Prostrate gland (ii) $\quad$Seminal vesicle (iii)$\quad$ Bulbourethral gland
$SER$ and $RER$ can be distinguished with its presence in
Select the correct sequence of steps in DNA fingerprinting involving southern blot hybridization using radiolabelled VNTR as a probe. I. $\quad$Hybridization using labelled VNTR probe. II. $\quad$Isolation of DNA. III. $\quad$Transferring (blotting) of separated DNA fragments to synthetic $\quad$$\quad$membranes, such as nitrocellulose or nylon. IV.$\quad$ Detection of hybridized DNA fragments by autoradiography. V. $\quad$Separation of DNA fragments by electrophoresis. VI. $\quad$Digestion of DNA by restriction endonucleases.
Select the correct pair amongst the following.
Rubber is commercially obtained from
RNA interference involves
Predict in which of the following entropy decreases.
Polaroid glass is used in sun glasses because
If $x, v$ and $a$ denote the displacement, the velocity and the acceleration of a particle executing simple harmonic motion of time period $T$, then, which of the following does not change with time?
Photochemical smog is formed in
Particle $A$ makes a perfectly elastic collision with another particle $B$ at rest. They fly apart in opposite directions with equal speeds. The ratio of their masses $m_A/m_B$ is
Oxidation state of iron in haemoglobin is
Occurrence of triploid (3n) primary endosperm nucleus is a characteristic feature of
Number of meiotic divisions necessary to produce 100 seeds in cyperus is