Two coins tossed, different winnings for 2, 1, 0 heads: variance of the winning amount

The same question, asked 3 times: 10 May 2024 S1*, 25 Apr 2025 S2*, 11 Apr 2026 S2. Every wording below, oldest first.

Try each one first, then open its answer.

Question 1
10 May 2024 S1
131 $Player tosses 2 fair coins: wins ₹5 (2H), ₹2 (1H), ₹1 (0H). Variance of winning amount is$
Tap an option to check your answer.
Question 2
25 Apr 2025 S2
113 $A player tosses two coins. He wins ₹ 10, if 2 heads appear, ₹ 5, if one head appear and ₹ 2 if no head appears. Then variance of winning amount is$
Tap an option to check your answer.
Question 3
11 Apr 2026 S2
98 $5$
Tap an option to check your answer.