List of practice Questions

The charge carriers in a $ p $ -type semiconductor are

Solutions $ A $ , $ B $ , $ C $ and $ D $ are respectively $ 0.1\, M $ glucose, $ 0.05 \,M\, NaCl $ , $ 0.05 \,M\, BaCl_2 $ and $ 0.1\, M\,AlCl_3 $ . Which one of the following pairs is isotonic ?

In the reaction $ 2 A + \text{dry silver oxide} \xrightarrow { \triangle } \, \text{ether} + 2 \, AgX $ A is a/an

The correct order of boiling point for primary $ (1^{\circ}) $ , secondary $ (2^{\circ}) $ and tertiary $ (3^{\circ}) $ alcohols is

Which of the following while in motion cannot be deflected by magnetic field ?

Tranquilisers are also known as

The charge carriers in a p-type semiconductor are

The binary number $10111$ is equivalent to the decimal number

The speed of sound in hydrogen at NTP is $1270 \,ms$ Then, the speed in a mixture of hydrogen and oxygen in the ratio $4 : 1$ by volume will be

Total number of rare earth elements is

A body of mass 10 kg initially at rest acquires velocity $10 ms^{-1}$. What is the work done

Coralloid root is the feature of:

A block (5) is attached to two unstretched springs $ S_1 \, \, and \, \, S_2 $ with spring constants k and 4k, respectively. The other ends are attached to two supports $ M_1 $ and $ M_2 $ not attached to the walls. The springs and supports have negligible mass. There is no friction anywhere. The block B is displaced towards wall 1 by a small distance x and released. The block returns and moves a maximum distance y towards wall 2. Displacements x and y are measured with respect to the equilibrium position of the block B. The ratio $\frac{y}{x}$ is

The area of the acceleration-displacement curve of a body gives

Abnormal colligative properties are observed only when the dissolved non-volatile solute in a given dilute solution

Meselson Stahl experiment on semi- conservative replication demonstrates that

$RbO_2$ is

Dimorphism of chloroplast is found in

The projection of $\vec{a}=3\hat{i}-\hat{j}+5\hat {k} $ on $\vec{b}=2 \hat {i}+3 \hat j+\hat k$ is

The emf of Daniell cell at $298 K$ is $E_{1}$ $Zn \left| ZnSO _{4}(0.01 M )\right|\left| CuSO _{4}(1.0 M )\right| Cu$ When the concentration of $ZnSO _{4}$ is $1.0 M$ and that of $CuSO _{4}$ is $0.01 M$, the emf changed to $E_{2}$. What is the relation between $E_{1}$ and $E_{2}$ ?

The bond angle in $AsH _{3}$ is greater than that in

The IV cranial nerve is

Which of the following antibiotic is active against fungus ?

The heat of formation of $ CO(g) $ and $ C{{O}_{2}}(g) $ are $ \Delta H=-110 $ and $ \Delta H=-393\,\,kJ\,\,mo{{l}^{-1}} $ respectively. What is the heat of reaction $ (\Delta H) $ (in $ kJ\,\,mo{{l}^{-1}}) $ for the following reaction? $ CO(g)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow{{}}C{{O}_{2}}(g) $