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Chemistry

Chemistry
Solder is an alloy of

Sodium, lead
Lead, zinc
Copper, lead
Tin, lead

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Chemistry
Bakelite is a co-polymer of Phenol and

Acetaldehyde
Cinnaldehyde
Benzaldehyde
Formaldehyde

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Chemistry
Which of the following causes the rusting of iron? a. Oxidation b. Reduction c. Chemical reaction with oxygend. Chemical reaction with CO2

A and c
B and c
C and d
A and b

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Chemistry
An emulsion is a colloidal solution of

Solid in Solid
Solid in liquid
Gas in solid
Liquid in liquid

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Chemistry
Hard water and soft water can be distinguished by using

Ordinary soap
Detergent
Dilute acid
Liquid soap

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Chemistry
Which of the following electrodes is used in strongly alkaline solution

Mercury - mercurous sulphate electrode
Mercury - mercuric oxide electrode
Silver - silver chloride electrode
Mercury - mercurous chloride electrode

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