Write two important uses of each of the following: (i)Sodium carbonate (ii)Sodium Hydroxide (iii)Sodium hydrogen carbonate

(i) 2CH3COOH + 2Na → 2CH3COONa + H2                                        Sodium ethanoate (ii) CH3COOH +...

(i) Bakelite is used for making combs, electrical switches, handles of various utensils and phonograph records. (ii) Nylon-6 is used for making tyre cords, ropes and fabrics.

(i) It is used for making combs, fountain pen barrels, phonograph records. It is used widely in making electrical goods such as switches, plugs, handles of various utensils. (ii) It is...

Infrared rays produced by hot bodies and molecules. These waves are used for long distance photography and for therapeutic purposes.

Microwaves are produced by special vacuum tubes, namely; klystrons, magnetrons and gunn diodes. Their frequency range is 3 GHz to 300 Ghz. They are used in radar systems used in...

a) The storage and transportation of liquid hydrogen as a fuel is hydrogen economy  b) Those cells in which the energy of combustion is converted into electricity are called fuel cells...

(a) Ca(OH)2+CO2  → CaCO3+H2O (b) Zn+2AgNO3 →  Zn(NO3)2+2Ag (c) 2Al+3CuCl2 → 2AlCl3+3Cu (d) BaCl2+ K2SO4 → BaSO4+2KCl

(i) 2CH3COOH + 2Na→ 2CH3COONa+H2 Sodium ethanoate/Sodium acetate (ii)CH3COOH + NaOH→ CH3COONa + H2O Sodium ethanoate/Sodiurn acetate (iii) CH3COOH+C2H5OH → CH3COOC2H5+H2O Ethyal ethanoate/Ester

(c) aluminium

Hint:  Types of fuels  Solid fuel – Coal, wood, etc.  Liquid fuel – Kerosene oil, petrol etc.  Gaseous fuel – CNG, LPG etc.  Uses  Coal – cooking etc.  Kerosene oil – Fuel for stoves, lamps etc.  LPG –...