List of top Questions asked in UP JEE Polytechnic

Hardness of water is due to the presence of:

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

\( F_2C = CF_2 \) 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:

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

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

Real gas behaves like an ideal gas at:

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?

Detergents are the salt of:

Essential constituent of an amalgam is:

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?

Which of the following types of drugs reduces fever?

Hydrocarbon used for welding purposes is:

An example of thermosetting plastic is:

A wooden block of mass 6 kg is pulled across a rough surface by a 54 N force against a friction force \( F \). The acceleration of the block is \( 6 \, \text{m/s}^2 \). Then the value of friction force \( F \) is:

Electronic configuration of copper can be represented as:

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

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

The common name of 2-Butanone is:

Heat (in calorie) required to increase the temperature from \( 10^\circ C \) to \( 20^\circ C \) of 6 kg copper is the same as the heat (in calorie) required to increase the temperature from \( 20^\circ C \) to \( 100^\circ C \) of 3 kg lead. If the specific heat of copper is 0.09, then the specific heat of lead will be: