List of practice Questions

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 ?
Which of the following is the correct electron dot structure of $N_2O$ molecule ?
Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP ?
Select the mismatch :
The S.I. unit of specific heat capacity is
Which of the following are found in extreme saline conditions ?
Which of the following components provides sticky character to the bacterial cell ?