List of practice Questions

The standard (reduction) electrode potentials for metal-metal ion $ (M/M^{2+}) $ electrodes $ P, Q, R $ and $ S $ are respectively $ -0.44 \, V, +0.34\, V, -0.76\,V $ and $ -0.25 \, V $ The increasing order of their reducing capacities is
The increasing order of reactivity in the $ S_{N}{2} $ hydrolysis of the following alkylbromides is (1) $tert$-Butyl bromide (2) Methyl bromide (3) $sec$-Butyl bromide (4) $ n $ - Propyl bromide
Which one of the following hydrogen halides has the least bond dissociation enthalpy?
The equation of the tangent to the curve $y = x^3 - 6x + 5$ at $(2,1)$ is
Choose the wrong statement
The alkaline earth metal sulphate which is most soluble in water among the following is
The correct order of increasing stabilities for the following carbocations is (1) allyl carbocation (2) neopentyl carbocation (3) benzyl carbocation (4) isobutyl carbocation
The optically inactive compound among the following is
Which of the following oxyacids of sulphur has $ S-O-S $ linkage in its structure?
The pH of a solution obtained by mixing 60 mL of 0.1 M BaOH solution at 40m of 0.15m HCI solution is
If a and ??are the roots of 4x2 + 2x + 1 = 0, then ??=
The slope of the straight line$\frac{ x}{10 }$-$\frac{y }{4 }$ = 3 is
The hybridized state of $Al^{3+}$ in the complex ion formed when $AlCl_3$ is treated with aqueous acid is
Which among the following polymers is non - biodegradable?
The kinetic energy of a particle executing simple harmonic motion is $ 1/6^{th} $ of its maximum value at a distance of $ 5 \,cm $ from its equilibrium position. The amplitude of its motion is
In a moving coil galvanometer, the coil having $ 500 $ turns and an average area of $ 4 \,cm^{2} $ carries a current of $ 0.1 \,A $ and is set parallel to a magnetic field with a torque of $ 0.15\, N \,m $ . The strength of the magnetic field is
An organ pipe open at both ends has fundamental frequency $ f $ in air. If the pipe is dipped vertically in water such that $ 1/4^{th} $ of its length is inside water, then the fundamental frequency of the air column in it is
The density and edge length values for a crystalline element with $ fcc $ lattice are $ 10 \,g \,cm^{-3} $ and $ 400\, pm $ , respectively. The number of unit cells in $ 32 \,g $ of this crystal is
If $ 25^{th} $ term of an $ A.P. $ is $ 15 $ and if its $ 15^{th} $ term is $ 25 $ , then the $ 40^{th} $ term of the $ A.P. $ is
The increasing order of basic strength for the following amines in aqueous phase is (1) aniline (2) triethylamine (3) ammonia (4) triphenylamine
The pair of rigid bodies with mass M and radius R, having the moment of inertia $\frac{MR^{2}}{2}$ can be
The correct increasing order of bond order values for the concerned species is
The operating point of transistor amplifier should be in
The electric flux passing through $a$ cube of side $ a $ , which holds a charge $ q $ at one of its corners is
A pair of unbiased dice is thrown once. Let $ X $ be the random variable denoting the product of numbers that appear on the two dice. Then $ P\left(X \ge21\right)= $