List of practice Questions

$\mu_0$ and $\varepsilon_0$ denote the permeability and permittivity of free space, the dimensions of $\mu_0 \varepsilon_0$ are

In $ HCO{{O}^{-}} $ , the two carbon-oxygen bonds are found to be of equal length. What is the reason for this?

Chordae tendineae are found in

For the reaction, $2 A(g)+B_{2}(g) \rightleftharpoons 2 A B_{2}(g)$ the equilibrium constant, $K_{p}$ at $300\, K$ is $16.0$. The value of $K_{p}$ for $A B_{2}(g) \rightleftharpoons A(g)+1 / 2 B_{2}(g)$ is

For which one of the following reactions will there be a positive $\Delta S$ ?

One molecule of $NADH_2$ is equivalent to how many $ATP$ molecules?

Identify the components labelled A, B, C and D in the diagram below from the list (i) to (viii) given along with Components: (i) Cristae of mitochondria (ii) Inner membrane of mitochondria (iii) Cytoplasm (iv) Smooth endoplasmic reticulum (v) Rough endoplasmic reticulum (vi) Mitochondrial matrix (vii) Cell vacuole (viii) Nucleus The correct components are:

	A	B	C	D
(1)	(v)	(iv)	(viii)	(iii)
(2)	(i)	(iv)	(viii)	(vi)
(3)	(vi)	(v)	(iv)	(vii)
(4)	(v)	(i)	(iii)	(ii)

Select the correct statement from the following

A bilaterally symmetrical deuterostorne is classified in the phylum

For any two vectors A and B, if $A\cdot B =|A \times B |$ , the magnitude of C = A + B is equal to

Deposition of cholesterol in walls of arteries is

Which one of following is used as vector for cloning genes into higher organisms ?

Reaction of methyl bromide with aqueous sodium hydroxide involves

A solid cylinder and a hollow cylinder, both of the same mass and same external diameter are released from the same height at the same time on an inclined plane. Both roll down without slipping. Which one will reach the bottom first?

A gramophone record is revolving with an angular velocity $\omega$. A coin is placed at a distance $r$ from the centre of the record. The static coefficient of friction is $\mu$. The coin will revolve with the record if

The set which represents the isotope, isobar and isotone respectively is

The ratios of the distance traversed, in successive intervals of time by a body, falling from rest, are

The amount of heat evolved when $500 \,cm^3$ of $0.1 \,M \,HCl$ is mixed with $200\, cm^3$ of $0.2\,M \,NaOH$ is _______

The correct IUPAC name of $K_2[Ni(CN)_4]$ is _______

The empirical formula of a non-electrolyte is $CH_2O$. A solution containing $6 \,g$ of the compound exerts the same osmotic pressure as that of $0.05\, M$ glucose solution at the same temperature. The molecular formula of the compound is

The diagram of Labeo rohita is given below. Identify the parts labelled A, B, C, D, E, F, G.

Which one of the following pairs is an example for lateral meristem?

Two smalI spheres of masses $M_1 $ and $M_2$ are suspended by weightless insulating threads of lengths $ L_1$ and $ L_2$. The spheres carry charges $Q_1$ and $Q_2$ respectively. The spheres are suspended such that they are in level with one another and the threads are inclined to the vertical at angles of $\theta_1 $ and $\theta_2$ as shown. Which one of the following conditions is essential, if $\theta_1 = \theta_2$ ?

The temperature of a gas contained in a closed vessel of constant volume increases by $1^\circ$C when the pressure of the gas is increased by $1\%$. The initial temperature of the gas is ..........

The spin only magnetic moment of $Mn^{+4}$ ion is nearly____