Class 11 Chemistry 2018 Local MCQs Test

Surface tension of a liquid is directly related to the strength of the intermolecular force of attraction. Indicate the one with the lowest surface tension among the following:

The number of Hydrogen atoms in 1 mole of H₂O is:

The solution in which pH is maintained, when a small amount of acid or base is added to it, is known as:

According to Bohr’s atomic theory, angular momentum (mvr) of an electron is equal to:

K_p, K_c, K_n and K_π are equilibrium constants in terms of pressure, concentration, moles and mole fraction. These constants can be equal when:

If pK_a values of different acids are given below, indicate the strongest acid among them:

The rate of a chemical reaction is measured in:

Carbon exists in both, diamond (cubic form) and graphite (hexagonal form). This phenomenon is known as:

If the amount of a product obtained in a chemical reaction is 250g while its theoretical yield is 500g. Its percentage yield will be:

“The net heat change in a chemical reaction is the same whether it is brought about in one step or more than one step”. It is known as:

Which of the following is NOT true for cathode rays?

In an H₂O molecule, there are two bond pairs and two lone pairs around the central atom. Its molecular shape will be:

Consider the following reaction:
NO_(g) + O_3(g) → NO_2(g) + O_2(g)   Rate = K[NO][O₃]
Which statement is NOT correct about the given reaction?

Which one of the following is different from the others?

What could be the geometrical shape of SF₆ according to VSEPR theory?

The amount of a substance produced during electrolysis by passing one Faraday of electricity is called:

100g of 10% (w/w) NaOH solution contains 10g of NaOH in: