0.1 faraday of electricity deposited 2.95 g of nickel during electrolysis of an aqueous solution. Calculate the number of moles of nickel that will be deposited by 0.4 faraday? (Ni = 58.7)

• A. 0.20
• B. 0.30
• C. 0.04
• D. 5.87

In the process of silver-plating a metal M, the metal M is the?

• A. anode and a direct current is used
• B. cathode and an alternating current is used
• C. anode and an alternating current is used
• D. cathode and a direct current is used

How many principal electronic shells has an atom whose electronic configuration is shown below? 1s²2s²2p⁶3s¹

• A. 1
• B. 2
• C. 3
• D. 4

Give the common name for the following compound (CH3)2 CH CH2 -Br

• A. Isobutyl bromide
• B. Methyl bromide
• C. propyl bromide
• D. Butyl bromide

Cr₂O₇+ 6Fe²⁺+ 14H⁺ → 2Cr³⁺ +6Fe³⁺ + 7H₂O. In the above , the oxidation number of chromium changed from?

• A. +7 to +3
• B. +6 to +3
• C. +5 to +3
• D. -2 to +3

The hydrolysis of proteins by diluting mineral acids produces

• A. sucrose
• B. glucose
• C. amino acids
• D. fatty acids

If 60cm³ of gas is heated from 27°C TO 50°C, what is the new volume of the gas at constant pressure?

• A. 32.4cm³
• B. 55.7cm³
• C. 64.6cm³
• D. 111.1cm³

The carbon atoms in ethene are?

• A. sp3 hybridized
• B. sp hybridized
• C. sp2 hybridized
• D. not hybridized

The following salts dissolve readily in cold water except

• A. CaCI₂
• B. PbSO₄
• C. (NH₄)₂SO₄
• D. Na₂CO₃

Which of the following separation is routinely applied in the petroleum industry

• A. Filtration
• B. Chromatography
• C. Evaporation
• D. Fractional distillation