Match the elements given in Column I with the colour they impart to the
flame given in Column II.

  Column I                     Column II

1. Cs                         (a) Apple green

2. Na                         (b) Violet

3. K                           (c) Brick red

4. Ca                         (d) Yellow

5. Sr                         (e) Crimson red

6. Ba                         (f) Blue

1. (1)→ (f),(2) → (d),(3) → (b),(4) → (c),(5)→ (e),(6) → (a)

2. (1)→ (a),(2) → (d),(3) → (c),(4) → (b),(5)→ (f),(6) → (e)

3. (1)→ (b),(2) → (a),(3) → (d),(4) → (e),(5)→ (c),(6) → (f)

4. (1)→ (d),(2) → (c),(3) → (e),(4) → (a),(5)→ (f),(6) → (b)

 

Which nitrate cannot give light brown gas on heating?

Na₂CO₃ can be manufactured by Solvay’s process but K₂CO₃ cannot be, because

1. K₂CO₃ is more soluble

2. K₂CO₃ is less soluble 

3. KHCO₃ is more soluble than NaHCO₃

4. KHCO₃ is less soluble than NaHCO₃

Which of the following metal bicarbonates does not exist as solid?

1. LiHCO₃

2. KHCO₃

3. RbHCO₃

4. NaHCO₃

Which of the  following metal is most commonly used in photochemical cells?

1. Lithium

2. Calcium

3. Caesium

4. Fransium 

Which of the following is ‘dead burnt plaster’?

1. CaCO₃

2. CaSO₄ . 1/2H₂O

3. CaSO₄ . 2H₂O

4. CaSO₄

Which of the following substances can be used for drying gas?

Alkali metals in liquid NH₃ produce a blue coloured solution, due to-

1. Polarisability of NH₃

2. Charge transfer

3. d$\to$d transition

4. Ammoniated electrons

Correct order of solubility of Group l bicarbonate is 

1 RbHCO₃$>$KHCO₃$>$NaHCO₃

2 NaHCO₃ $>$KHCO₃ $>$RbHCO₃

3 LiHCO₃ = NaHCO₃ = KHCO₃ = RbHCO₃

4 All group l bicarbonates are insoluble

Strongest reducing agent in aqueous solution of Group l and colour imparted to flame by this element is

1 Cs, blue

2 Cs, red

3 Li, crimson red

4 Li, pink