List of practice Questions

If $A$ is a square matrix of order $3 \times 3$, then $|KA|$ is equal to

Two simple pendulums $A$ and $B$ are made to oscillate simultaneously and it is found that $A$ completes $10$ oscillations in $20\, sec$ and $B$ completes $8$ oscillations in $10\, sec$. The ratio of the lengths of $A$ and $B$ is

In which of the following, homolytic bond fission takes place ?

In which of the following, homolytic bond fission takes place ?

Pick up the incorrect statement from the following

Two astronauts are floating in gravitational free space after having lost contact with their spaceship. The two will :

Which of the following pairs of species have the same bond order ?

If $A$ and $B$ are finite sets and , ${A \subset B}$ then

The derivative of $\cos^{-1} (2x^2 - 1)$ w.r.t $\cos^{-1} x$ is

A proton, a deuteron and an $\alpha$ - particle are projected perpendicular to the direction of a uniform magnetic field with same kinetic energy. The ratio of the radii of the circular paths described by them is

Which one is the wrong statement ?

The conversion of ethyl bromide to ethyl iodide using sodium iodide and dry acetone, this reaction is known as

Which of the following in sewage treatment removes suspended solids ?

If there are 999 bases in an RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered ?

Which of the following RNAs should be most abundant in animal cell ?

Identify the correct statement in the following

Bactericidal antibiotics among the following is

A reaction has both $\Delta \,H$ and $\Delta \,S$ - ve The rate of reaction

Addition of mineral acid to an aqueous solution of Borax, the following compound is formed

Which of the following element forms $p_{\pi} - p_{\pi}$ bond with itself ?

Which of the following structure of a molecule is expected to have three bond pairs and one lone pair of electrons ?

If $tan^{-1} \,x + tan^{-1} \,y = \frac{4\pi}{5}$, then $cot^{-1}\, x + cot^{-1} \,y$ is equal to

The co-ordination number and the oxidation state of the element $'M'$ in the complex $[ M(en)_{2}(C_{2}O_{4})]NO_{2}$ $\{$ where (en) is ethane-1,2-diamine) are, respectively

Which of the following aqueous solution has highest freezing point ?