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Chemistry

Chemistry
Galvanization of iron is carried out using

Tin
Zinc
Copper
Chromium

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Chemistry
When quick lime is added to water

Heat is liberated
No heat change takes place
Heat is absorbed
Temperature decreases

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Chemistry
Stainless steel is usually made by alloying the steel with

Copper and nickel
Chromium and nickel
Manganese and copper
Copper and chromium

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Chemistry
The new strain of bacteria produced by biotechnology in alcohol industry is

Escherichia coli
Pseudomonas putida
Bacillus subtilis
Saccharomyces cerevisiae

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Chemistry
The number of waves in n x 10th Bohr's orbit are

n
n-2
n3
n2

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Chemistry
Submarines move under water. They have engines that run on

Petrol and oxygen
Batteries
Diesel
Steam

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