List of practice Questions

Stephen's reduction is used to prepare aldehyde from :

Statement 1. Unit of gas constant is joule mole$^{-1}$ kelvin$^{-1}$. Statement 2. Dimensional formula for gas constant is $[ML^2T^2K^{-1} mol^{-1}].$

Statement A : For a particular character in an individual, each gamete gets only one allele. Statement B : Chromatids of a chromosome split (separate) and move towards opposite poles during anaphase of mitosis.

Statement 1. A gas at high temperature and low pressure behaves as an ideal gas.$\,$ Statement 2, A gas in which intermolecular forces are zero is called ideal gas

Statement-1 : BO is acidic. Statement-2 : AlO and GaO are Amphoteric. Statement-3 : In O and T$\ell_2$O are basic in nature. No. of correct statements are -

Starting from the innermost part, the correct sequence of parts in an ovule are

Starting with a sample of pure $ ^{66} Cu, $ 7/8 of its decays into Zn in 15 min. The corresponding half-life is

State of hybridisation of carbon atom of carbene in the singlet state is

State $T$ for true and $F$ for false. (i) If the vertices of a triangle have integral coordinates, then the triangle cannot be equilateral. (ii) Line joining the points $(3, -4)$ and $(-2, 6)$ is perpendicular to the line joining the points $(-3,6)$ and $(9,-18)$. (iii) The angle between the lines $y=\left(2-\sqrt{3}\right)\left(x+5\right)$ and $y=\left(2+\sqrt{3}\right)\left(x-7\right)$ is $45^{\circ}$. (iv) The points $A(-2, 1)$, $B(0, 5)$ and $C(-1, 2)$ are collinear.

Spraying of DDT produces pollution of

Staminate flowers produce

Standard deviation for first $10$ natural numbers is

Splitting of water is associated with

Spore dispersal in slime moulds is with the help of

Spot out the odd one.

Spot the odd one out from the following structures with reference to the male reproductive system.

Spines present on the areoles of Opuntia represent

Splint bones of horse are vestigial

Spermiation is the process of the release of sperms from

Speed of sound wave in air

Speeds of two identical cars are U and 4U at a specific instant. The ratio of the respective distances in which the two cars are stopped from that instant is

Specific conductance of $0.1\, M\, NaCl$ solution is $1.01 \times 10^{-2}\, ohm^{-1}\, cm^{-1}$. Its molar conductance in $ohm^{-1}\, cm^2 \,mol^{-1}$ is

Specify the coordination geometry around and hybridisation of N and B atoms in a 1 : 1 complex of $BF_3$ and $NH_3$.

Speed of light in vacuum is given by $3 \times 10^8\, m\, s^{-1}$ in $MKS$ system. If in a new system, the unit of length and time is increased by a factor of $2$ and $4$, respectively, then the numerical value of speed of light in this new system will be

Sound waves travel fastest in