List of practice Questions

What should be possible $ d $-orbital energy levels of $ Ni $ in $ [Ni(CN)_4]^{2-} $ ?
Why is $ F_2 $ the strongest oxidizing agent (among halogens) although electron affinity of $ Cl_2 $ is higher than $ F_2 $ ?
What is the correct order of bond strength for $ NO, NO^+ $ and $ NO^- $ ?
Plants which produce characteristic pneumatophores and show vivipary belong to :
There are four conformational isomers of $ n $ -butane. Eclipsed, Fully eclipsed, Gauche, Staggered Arrange these isomers of $ n $ -butane in increasing order of energy.
What will be the $ pH $ at which precipitation of $ Zn(OH)_2 $ will take place from a solution containing $ 0.3 \,M \,Zn^{2+} $ ion? $ K_{sp} $ of $ Zn(OH)_2 = 1.2 \times 10^{-12} $
An extrinsic semiconductor with electrons as majority carriers can be obtained by doping $ Ge $ or $ Si $ with
According to the expression $ \Delta G^{\circ} = -nFE^{\circ} $ , the cell reaction is spontaneous when (Notations and symbols carry their usual meanings)
A common observation seen in $ Fe_3O_4 $ is that it is ferrimagnetic at room temperature but at $ 850 \,K $ it becomes
Compounds $ A $ and $ C $ in the following reaction are $ CH_3CHO {->[(i) CH_3MgBr][(ii)H_2O]} (A) {->[H_2SO_4, \Delta ]} (B) $ $ {->[{\text{Hydroboration oxidation}}]} (C) $
The difference between the maximum and minimum values of resistance of a resistor with the color scheme green-green-red-silver is
Which of the following is the indirect way of generating $ FM $ ?
A physical quantity X is given by $X=\frac{2k^{3}l^{2}}{m\sqrt{n}}$ The percentage error in the measurements of k, l, m and n are 1%, 2%, 3% and 4% respectively. The value of X is uncertain by
The magnetic field due to a current in a straight wire segment of length $L$ at a point on its perpendicular bisector at a distance $r (r >> L)$
The decomposers in an ecosystem are ______
A metal rod of length ????and cross-sectional area ????is heated through $???? \, {^{\circ}C}$. What is the force required to prevent the expansion of the rod lengthwise ? [Y = Young's modulus of the material of rod , $\alpha$ = coefficient of linear expansion]
A lift of mass $m$ is connected to a rope which is moving upward with maximum acceleration $a$. For maximum safe stress, the elastic limit of the rope, is $T$. The minimum diameter of the rope is (g = gravitational acceleration)
The pH of nutrient medium in plant tissue culture is adjusted between _____
If $3.01 \times 10^{20}$ molecules are removed from $98 \, mg$ of $H_2SO_4$, then number of moles of $H_2SO_4$ left are
The function $ f (x) = x^2 + 2x - 5$ is strictly increasing in the interval
If a matrix $A$ is both symmetric and skew symmetric, then
Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?
What is the criterion for DNA fragments movement on agarose gel during gel electrophoresis?
Attractants and rewards are required for
The final proof for DNA as the genetic material came from the experiments of