$1\,^{\circ}C$ rise in temperature is equal to a rise of

If the value of Avogadro number is $6.023 \times 10^{23} \ mol^{-1}$ and the value of Boltzmann constant is $1.380 \times 10^{-23} \ J \ K^{-1}$,then the number of significant digits in the calculated value of the universal gas constant is

$0.1 \, mol \, L^{-1}$ means how much $mol \, m^{-3}$ and how much $mol \, cm^{-3}$?

The dimensions of an aluminum block are $3.0 \, \text{inch} \times 4.0 \, \text{inch} \times 5.0 \, \text{inch}$. What is the mass of this block in grams? The density of aluminum is $2.7 \, \text{g/cm}^3$ and $1 \, \text{inch} = 2.54 \, \text{cm}$.

Round up the following up to three significant figures:
$(i) 34.216$
$(ii) 10.4107$
$(iii) 0.04597$
$(iv) 2808$

Select the $INCORRECT$ statement/s from the following:
$(a)$ $22$ books have infinite significant figures
$(b)$ In the answer of calculation $2.5 \times 1.25$,the result has four significant figures.
$(c)$ Zeros preceding the first non-zero digit are significant.
$(d)$ In the answer of calculation $12.11 + 18.0 + 1.012$,the result has three significant figures.