List of practice Questions

Real gas behaves like an ideal gas at:

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

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):

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

An example of thermosetting plastic is:

Hydrocarbon used for welding purposes is:

Which of the following types of drugs reduces fever?

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

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

Essential constituent of an amalgam is:

The common name of 2-Butanone is:

The number of molecules present in 2.8 g of nitrogen 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?

Electronic configuration of copper can be represented as:

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:

A body weighs 75 gm in air, 51 gm when completely immersed in an unknown liquid and 67 gm when completely immersed in water. Find the density of the unknown liquid:

An object is placed in front of a convex lens of focal length 12 cm. If the size of the real image formed is half the size of the object, then the distance of the object from the lens is:

An object of 4.0 cm in size is placed at 25 cm in front of a concave mirror of focal length 15 cm. At what distance from the mirror should a screen be placed in order to obtain a sharp image?

100 joules of heat is produced each second in a 4 ohm resistance. Potential difference across the resistor is:

The gravitational force between two masses kept at a certain distance is \( P \) Newton. The same two masses are now kept in water and the distance between them is the same. The gravitational force between these two masses in water is \( Q \) Newton. Then:

\( V_V, V_R, V_G \) are the velocities of violet, red, and green light respectively, in a glass prism. Which among the following is a correct relation?

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:

A charge of 10 coulomb is brought from infinity to a point \( P \) near a charged body and in this process 200 joules of work is done. Electric potential at point \( P \) is: