Question : 60 discs each of diameter 21 cm and thickness $\frac{1}{3}$ cm are stacked one above the other to form a right circular cylinder. What is its volume in m³ if $\pi=\frac{22}{7}$?

Option 1: 7.62 × 10^–2

Option 2: 8.05 × 10^–3

Option 3: 6.93 × 10^–3

Option 4: 4.25 × 10^–2

Question : What is the defined value of kB in the given equation? kB= PV/TN.

Option 1: 1.38 × 10^-23JK^–1

Option 2: 1.08 × 10^-23JK^–1

Option 3: 1.68 × 10^-23JK^–1

Option 4: 0.38 × 10^-23JK^–1

Question : $\frac{4.41 × 0.16}{2.1 ×1.6 × 0.21}$ is simplified to:

Option 1: 1

Option 2: 0.1

Option 3: 0.01

Option 4: 10

Question : The value of $\frac{6.35 \times 6.35 \times 6.35+3.65 \times 3.65 \times 3.65}{63.5 \times 63.5+36.5 \times 36.5-63.5 \times 36.5}$ is equal to:

Option 1: 0.1

Option 2: 10

Option 3: 1

Option 4: 0.01

Question : If a³ + b³ = 217 and a + b = 7, then the value of ab is:

Option 1: – 6

Option 2: – 1

Option 3: 7

Option 4: 6