List of top Chemistry Questions

Chemically, carbohydrate is:

Which of the following compounds contains the -COOH (carboxylic) group?

The number of atoms in 0.1 mole of a triatomic gas will be (\( \text{N}_A = 6.02 \times 10^{23} \)):

Angular shape of ozone molecule consist of:

Which product will be formed during Etard’s reaction?

Tomato is a natural source of _ _ _ acid.

The pyrimidine bases present in DNA are:

Heating \( \text{Ba(NO}_3\text{)}_2 \) produces:

The colour of \( \text{Mg(NH}_4\text{)PO}_4\cdot\text{6H}_2\text{O} \) is:

This sulphide is not black:

Biuret test is not positive for:

The electrolyte used in $H_2 - O_2$ fuel cell is ________.

From the given data of \(E^{\circ}\) values, answer the following questions :
(I) Why \(E^{\circ}_{M^{2+}/M}\) show irregular trend in the above values ?
(II) Why is \(E^{\circ}_{Cu^{2+}/Cu}\) value exceptionally positive ?
(III) Why \(E^{\circ}_{Mn^{2+}/Mn}\) value is highly negative ?

When 3.00 g of a substance of molar mass 250 g mol$^{-1}$ is dissolved in 100 g of CCl$_4$, the boiling point of the solvent (CCl$_4$) will be elevated by _ _ _ K. (rounded off to two decimal places)

In DNA, the number of hydrogen bonds that hold each adenine-thymine base pair and each guanine-cytosine base pair, respectively, are _ _ _.

Which of the following organic compounds will give Lucas test immediately?

The conversion of alkyl halide to alcohol by aqueous $\text{KOH}$ is an example of}

Which of the following is the strongest base in aqueous solution?

The reaction of an aldehyde with Tollens' reagent gives

The main constituent of dettol is

Which of the following vitamins is water-soluble?

The monomers of Nylon-6,6 are