List of top Chemistry Questions asked in JKCET

Hoffmann's bromamide reaction is used to
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^- $ ?
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} $
According to the expression $ \Delta G^{\circ} = -nFE^{\circ} $ , the cell reaction is spontaneous when (Notations and symbols carry their usual meanings)
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) $
A common observation seen in $ Fe_3O_4 $ is that it is ferrimagnetic at room temperature but at $ 850 \,K $ it becomes
What is the probable free amino acid product formed when $ R^1CH(NH_2)CONHCHR^2COOH $ reacts with $ 1 $ -fluoro- $ 2,4 $ -dinitrobenzene in presence of $ NaHCO_3 $ followed by acid hydrolysis?
$ Cu $ crystallizes as face centred cubic lattice with edge length of $ 3.56 \, ? $ . What will be the nearest distance between $ Cu $ atoms?
What will be the value of activation energy ( $ E_a $ in $ kJ $ ) and rate constant ( $ k\, in\, min^{-1} $ ) for the given equation at $ 27^{\circ}C $ ? The equation : $ lnk = - 2576/T+ 12.1 $
How many bridging carbonyl $ (s) $ is/are present in the compound $ Fe_3(CO)_{12} $ compound?
Allene $ (C_3H_4) $ contains
Which of the following pairs of organic compounds give positive Tollens? test?
The geometry and type of hybrid orbital present around the central atom in $ BF_3 $ is
$ IF_7 $ is known to exist while $ BrF_7 $ does not exist. The reason is
Which of the following elements involves gradual filling of $ 4f $ -levels?
The sulphur compound in which the sulphur atom has octet configuration in its valence shell among the following is
The atom of largest size among the following is
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 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