(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

Explain the following method with example.  

Double decomposition (precipitation)

Write the balanced equation for the preparation of the following compound (as major product) starting from iron and using only one other substance:

Iron (II) sulphide

The following table is related to an industrial process of an acid.

Identify (a), (b) and (c).

The electron affinity of an element X is greater than that of element Y.

How is the oxidising power of X likely to compare with that of Y?

The electron affinity of an element X is greater than that of element Y.

How is the electronegativity of X likely to compare with that of Y?

The electron affinity of an element X is greater than that of element Y.

State whether X is likely to be placed to the left or to the right of Y in the periodic table.

Arrange the following as per instruction given in the bracket.

Cl, F, Br, I (increasing electron affinity)

Among period 2 elements A, B, C and D, the one which has highest electron affinity is ______.

In Period 3 of the Periodic Table, element B is placed to the left of element A. On the basis of this information, choose the correct word from the option to complete the following statement:

The element A would probably have ______ electron affinity than B.

State electron affinity unit.

Identify the term/substance in the following:

The electrons present in the outermost shell of an atom.

By drawing an electron dot diagram show the formation of Ammonium ion [Atomic No.: N = 7 and H = 1]

Choose the most appropriate answer of the following:

Bonding in this molecule can be understood to involve coordinate bonding

(A) Carbon tetrachloride

(B) Hydrogen

(C) Hydrogen chloride

(D) Ammonium chloride

Identify the anion present in the following compounds:

A salt M on treatment with concentrated sulphuric acid produces a gas which fumes in moist air and gives dense fumes with ammonia

The following table shows the test a student performed on four different aqueous solutions which are X, Y, Z and W. Based on the observations provided, identify the cation present:

Choose the correct answer from the options given below:

A compound X consists of only molecules. Hence, X will have

A. A crystalline hard structure

B. A low melting point and low boiling point

C. An ionic bond

D. A strong force of attraction between its molecules

Give the structural formula for 1, 2-dichloroethane

Give a reason for Inert gases do not form ions.

Complete the following table which relates to the homologous series of hydrocarbons.

Give two example in the following case:

Co-ordinate bond compounds