List of top Chemistry Questions

$\alpha$-D-(+)-glucose and $\beta$-D-(+)-glucose 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:

Sodium ethanoate on heating with soda lime gives ‘X’. Electrolysis of aqueous solution of sodium ethanoate gives ‘Y’. ‘X’ and ‘Y’ respectively are:

Propanone and Propanal are:

Which of the following set of polymers are used as fibre?
(i) Teflon
(ii) Starch
(iii) Terylene
(iv) Orlon

Which of the following statements related to lanthanoids is incorrect?

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 transition element (≈5%) present with lanthanoid metal in Misch metal is:

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

In the following scheme of reaction.

X, Y and Z respectively are:

Which of the following halides cannot be hydrolysed?

$NO_2$ gas 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:

Identify the incorrect statement from the following:

PCC is:

A pair of isoelectronic species having a bond order of one is:

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

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:

For the reaction PCl5​→PCl3​+Cl2​, the rate and rate constant are 1.02×10−4mol L−1s−1 and 3.4×10−5s−1, respectively, at a given instant. The molar concentration of PCl5​ at that instant is:

Identify the wrong relation for real gases:

For which one of the following mixtures is composition uniform throughout?

The energy associated with the first orbit of He+ is:

A metalloid is: