chemistry Question Bank - Sarthaks eConnect

Which of the following alcohol will yield the corresponding alkyl chloride on reaction with concentrated HCl and `ZnCl_2` at room temperature :-

Which of the following name is incorrect :-

Which of the following compounds shows least tendency towards hydrolysis :-

When ZnS and PbS minerals are present together than NaCN is added to separate them in the concentration process becacuse :-

Consider the given half cell

`Pt[Fe^(3+)(X_1,M),Fe^(2+) (X_2,M)]`

Correct statement about the half cells is :-

The densities of two gases are in the ratio of 1:16 the ratio of their rates of diffusion is

In which of the following processes, the value of magnetic moment does not change :-

Which of the following statements are not correct:-

2.34 g pure sample of `MgSO_4. 7H_2O` is heated to evaporate all of its water content. Maximum mass loss of the sample will be :-

The addition of HBr to 1-butene givbes a mixture of product A, B and C :-

In this :-

Suitable indicator for the following acid-base titration HCOOH against KOH is.

Which of the folloowing molecules has the maximum number of A–X bonds of identical length, where 'A' is the central atom and 'X' is the surrounding atom:-

Find the highest ratio of IP values of given pair of elements :-

A body of the mass x kg is moving with velocity of 100m `sec^(–1)`. Its de Broglie wavelength is`6.62xx10^(–35)m`. Hence x is :

10 ml of 0.02 M 4 KMnO is required to oxidize 20 ml. of oxalic acid of certain strength, 25 ml of the same oxalic acid is required to neutralise 20 ml. of NaOH of unknown strength. Amount of NaOH in a litre of the solution is -

Two flasks X and Y have capacity 1L and 2L respectively and each of them contains 1 mole of a gas. The temperature of the flasks are so adjusted that average speed of molecules in X is twice as those in Y. The pressure in flask X would be -

Statement-I : The tropilium ion (cycloheptatrienyl cation) is an aromatic ion.
Statement-II : The only criteria that determines its aromatic character is its planar structure.

Statement-I : The carbon-carbon double bond in propene `(CH_3CH=CH_2)` undergoes electrophilic addition, whereas the cabon-carbon double bond in acraldehyde `(CH_2=CH–CHO)` undergoes nucleophilic addition.

Statement-II : In propene, the electron-releasing effect of `CH_3`– group causes its double bond to act as an electron-pair donor whereas in acraldehyde, the –R effect of –CHO group causes its double bond to behave as an electron-pair acceptor.

Recent questions and answers in chemistry