List of top Chemistry Questions asked in UP JEE Polytechnic

In which of the following compounds does the oxidation number of oxygen equal +2?

An organic compound contains carbon = 38.71%, Hydrogen = 9.67% and Oxygen. The empirical formula of the compound would be:

Hardness of water is due to the presence of:

\( F_2C = CF_2 \) is a monomer of:

10.0 gm \( \text{CaCO}_3 \) on heating gave 5.6 gm of \( \text{CaO} \) and 4.4 gm of \( \text{CO}_2 \), given data support the law of:

Cracking is a process used for change in:

Which catalyst is used in oxidizing \( NH_3 \) in Ostwald's process?

Real gas behaves like an ideal gas at:

Detergents are the salt of:

The rate of diffusion of a gas is \( r \) and its density is \( d \), then under similar conditions of pressure and temperature:

Among the following, which is an ionic hydride?

Which of the following order of ionic radii is correctly represented?

Amount of copper deposited on the cathode of an electrolytic cell containing copper sulphate solution by the passage of 2 amperes for 30 minutes (At. mass of Cu = 63.5):

Equivalent weight of a dibasic acid is 12. Its molecular weight is:

In the following reaction: \[ SO_2 + 2H_2S \rightarrow 3S + 2H_2O \] Which of the following statements is correct?

Hydrocarbon used for welding purposes is:

Essential constituent of an amalgam is:

Which of the following types of drugs reduces fever?

An example of thermosetting plastic is:

Electronic configuration of copper can be represented as:

The number of molecules present in 2.8 g of nitrogen is:

The common name of 2-Butanone is:

The half-life period of a radioactive element is 150 days. After 600 days, 1 gm of the element will be reduced to:

Which among the following pairs are not having the same number of total electrons?