Question 1

Which one of the following metals does not form amalgam?

Accepted Answer

Iron does not react with mercury to form an amalgam, unlike zinc, copper, and magnesium which can form these alloys.

Question 2

In a dry cell (battery), which of the following are used as electrolytes?

Accepted Answer

In a dry cell (battery), the electrolytes used can be either ammonium chloride or zinc chloride, with the latter being a common replacement in modern batteries.

Question 3

Which one of the following is a mixed fertilizer?

Accepted Answer

NPK fertilizer is a type of mixed fertilizer that includes nitrogen, phosphorus, and potassium, which are all vital nutrients for plants.

Question 4

Stainless steel is an alloy of iron and

Accepted Answer

Stainless steel is a type of alloy that is made up of iron, chromium, and nickel. This combination gives it the property of being resistant to corrosion.

Question 5

Assertion (A): To dilute sulphuric acid, acid is added to water and not water to acid. Reason (R): Specific heat of water is quite large.

Accepted Answer

When diluting sulphuric acid, it is important to add acid to water slowly to avoid a sudden and potentially dangerous reaction. The specific heat of water, which is relatively high, is not the primary factor influencing this process.

Chemistry - Basics — UPSC Previous Year Questions

Which one of the following metals does not form amalgam?

Year-wise Distribution

Sample Questions

Chemistry - Basics — UPSC Previous Year Questions

Which one of the following metals does not form amalgam?

Year-wise Distribution

Sample Questions