Fill in the blanks with the correct words from the brackets:

Generally ionic compounds exist in (i) …………..(solid/liquid/gas) state. Melting and boiling points of covalent compounds are generally (ii)………… (low /high).

Fill in the blanck with correct words from the brackets:

The general formula for alkane is (iii)………..C_nH_2n/C_nH_2n-2/C_nH_2n+2). For alkynes the general formula is (iv) ……………(C_nH_2n/C_nH_2n-2/C_nH_2n+2)

3.

 Match each substance A to E listed below with the appropriate description:

A)     Sulphur

B)      Silver chloride

C)      Hydrogen chloride

D)     Copper (II) sulphate

E)      Graphite

A pink metal which is deposited at the cathode during the electrolysis of the solution of this salt.

Solution A is a strong acid

Solution B is a weak acid

Solution C is strong alkali

Which solution contains solute molecules in addition to water molecules?

Match each substance A to E listed below with the appropriate description:

A)     Sulphur

B)      Silver chloride

C)      Hydrogen chloride

D)     Copper (II) sulphate

E)      Graphite

 A non-metal which is good conductor of electricity.

Match each substance A to E  listed below with the appropriate description in parts (i)  to (v).

A) sulphur

B) silver chloride

C) hydrogen chloride

D) copper (II) sulphate’

E) Graphite

A covalent compound which behaves like an ionic compound in aqueous solution.

Name the gas evolved in each (formula is not acceptable)

The gas that burns in oxygen with a green flame.

Name the gas evolved in each case (formula is not acceptable)

The gas produced by the action of dilute nitric acid on copper.

Match each substance A to E listed below with the appropriate description in parts (i) to (v)

A) sulphur (B) silver chloride (C) hydrogen Chloride (D) copper (II) sulphate (E) graphite

A non-metal which reacts with concentrated nitric acid to form its own acid as one of the product.

A) sulphur

Select the correct answer from the choices A, B, C and D which is given.

Write only the letter corresponding to the correct answer .

Among the period 2 element the one which has high electron affinity is:

• Lithium

   

• Carbon

• Fluorine

• Fluorine