JU Admission Test 2015-2016 (Unit-A, Set-3)

1. How many $\mathrm{sp}^{3}$ hybrid orbitals are formed in $\mathrm{sp}^{3}$ hybridization?

2. Which is the value of the coal obtained from boropukuria of Bangladesh ?

3. A body moves linearly from the point $(0,0,1)$ to $(2,0,1)$. If the force acting on the body is $\overrightarrow{\mathrm{F}}=4 \hat{i}-3 \hat{j}$, work done will be -

4. A mixture contains $100 \mathrm{~g}$ isopropyl alcohol \& $50 \mathrm{~g}$ water. What is the mole fraction of alcohol in the mixture?

5. In order to get the moving length of a train equal to $\frac{1}{3}$ of the length at rest, the speed should be how many times of that of light?