List of top Chemistry Questions asked in KCET

Which one of the following pairs will show positive deviation from Raoult's Law?

A mixture of phenol and aniline shows negative deviation from Raoult's law. This is due to the formation of:

MnO exhibits:

The number of atoms in 4.5 g of a face-centred cubic crystal with edge length 300 pm is:

The first chlorinated organic insecticide prepared is:

Vapour pressure of a solution containing 18 g of glucose and 178.2 g of water at 100°C is:
(Vapour pressure of pure water at 100°C = 760 torr)

In the reaction between moist SO₂ and acidified permanganate solution:

Which of the following halides cannot be hydrolysed?

Which one of the following properties is generally not applicable to ionic hydrides?

0.48 g of an organic compound on complete combustion produced 0.22 g of CO₂. The percentage of C in the given organic compound is:

In the given sequence of reactions, identify ‘P’, ‘Q’ and ‘S’ respectively:

Which one of the following nitrates will decompose to give NO₂ on heating?

On treating 100 mL of 0.1 M aqueous solution of the complex CrCl₃.6H₂O with excess of AgNO₃, 2.86 g of AgCl was obtained. The complex is:

The complex compounds [Co(NH₃)₅SO₄]Br and [Co(NH₃)₅Br]SO₄ are:

A haloalkane undergoes $S_{N^2}$ or $S_{N^1}$ reaction depending on:

In the analysis of III group basic radicals of salts, the purpose of adding NH₄Cl (solid) to NH₄OH is:

Which of the following statements are true about [CoF₆]³⁻ ion?
I) The complex has octahedral geometry.
II) Coordination number of Co is 3 and oxidation state is +6.
(III) The complex is sp³d² hybridised.
(IV) It is a high spin complex.

2-Methylpropane can be prepared by Wurtz reaction. The haloalkanes taken along with metallic sodium and dry ether are:

Biologically active adrenaline and ephedrine used to increase blood pressure contain

The female sex hormone responsible for developing secondary female characteristics and menstrual cycle control is:

When a tertiary alcohol ($C_4​H_{10}​O$) reacts with 20% $H_3​PO_4$​ at 358 K, it gives a compound ($C_4​H_8​$) as the major product. The IUPAC name of this compound is:

In the reaction: \(\text{Aniline} \xrightarrow{\text{NaNO}_2/\text{dil. HCl}} P \xrightarrow{\text{Phenol/NaOH}} Q\)

In the following scheme of reaction.

X, Y and Z respectively are:

PCC is: