List of top Chemistry Questions

Which of the following compound is not coloured?
Consider the following solutions, A = 0.1 glucose, B = 0.05 M NaCl, \(C = 0.05 M BaCl_2, D = 0.1 M AlCl_3\) Which of the following pairs is isotonic?
Isopropyl chloride + A \(\xrightarrow{\triangle}\)2-ethoxy propane + NaCl. The compound (A) is
1-butyne on oxidation with hot alkaline \(KMnO_4 \)would yield. Which of the following as end product?
\[\text{Phenol} \xrightarrow{\text{(i) NaOH, (ii) CO}_2, \, \text{140°C}} \text{A} \xrightarrow{\text{H}^+/\text{H}_2\text{O}}\text{B}\xrightarrow{\text{Ac}_2\text{O}} \text{C}\]
In the above reaction, end product 'C' is

The product (P) is
Among the following set of quantum numbers, the impossible set is
Which of the following is least soluble in water?
The compressibility of a gas is less than unity at STP; therefore
A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives
Plaster of Paris is represented as
What are the hydrolysis products of sucrose?
The distinction between primary, secondary and tertiary amines can be done experimentally by using
What will be the boiling point of $ 30 \,g $ benzene containing $ 0.75\, g $ of benzoic acid which undergoes $ 75\% $ dimerization? Boiling point of pure benzene $ = 80.1^{\circ}C $ and $ K_b = 2.53 \,K mol^{-1}\, kg $
Under what condition, will $ x/m $ value be equal to pressure of the gas on the surface of the absorbent?
Let the energy of an $ n^{th} $ orbit of $ H $ atom be $ -21.76 \times 10^{19}/n^2\, J $ . What will be the longest wavelength of energy required to remove an electron from the third orbit?
Hoffmann's bromamide reaction is used to
Why is $ F_2 $ the strongest oxidizing agent (among halogens) although electron affinity of $ Cl_2 $ is higher than $ F_2 $ ?
What should be possible $ d $-orbital energy levels of $ Ni $ in $ [Ni(CN)_4]^{2-} $ ?
What is the correct order of bond strength for $ NO, NO^+ $ and $ NO^- $ ?
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} $
There are four conformational isomers of $ n $ -butane. Eclipsed, Fully eclipsed, Gauche, Staggered Arrange these isomers of $ n $ -butane in increasing order of energy.
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