Measurement of Matter and Uncertainty in Measurement

The number of significant figures in $4.023$ is

Number of significant figures in $6.62\times {10}^{-34}$

The number, $0.00001465$ can be correctly expressed in scientific notation as

Numerical prefix used for ${10}^{12}$ is

Which of the following are correct statements?

$\left(\mathrm{a}\right)$ Precision refers to closeness of various measurements for the same quantity.

$\left(\mathrm{b}\right)$ Accuracy is the agreement of particular value to the true value of the result.

$\left(\mathrm{c}\right)$ Accuracy is closeness of various measurements for the same quantity

Round off $0.1576$ upto one digit after decimal

Round off $0.1525$ upto three significant figures

Add $\left(0.001+0.02\right)$ upto correct number of significant figures

The unit of intensity is

Which of the following device is a volume measuring device?

If a pressure of gas is increases, so what will be the volume of gas.

Which of the following is mass unit in metric system?

Which of the following is correct?

$4\times {15}^3-2\times {10}^2$ is 

Prefix Giga means:

Given the number: $161 \mathrm{cm}; 0.161 \mathrm{cm}; 0.0161 \mathrm{cm}$. The number of signification figures for three numbers is:

What is the value of $200 °\mathrm{C}$ in Fahrenheit?

Among the following, the correct statement is :

If the density of a solution is $3.12 \mathrm{g} {\mathrm{mL}}^{-1}$ , the mass of $1.5 \mathrm{mL}$ solution in significant figures is