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Which of the following reactions are both stereospecific and stereoselective?

Can cyclic hydrocarbons have an $sp$ hybridized carbon?

For the photoelectric effect in sodium, the figure shows the plot of cut-off voltage versus frequency of incident radiation.

The threshold frequency is:

The $P-V$ diagram of a diatomic ideal gas system going under cyclic process as shown in figure. The work done during an adiabatic process $CD$ is (use $\gamma =1.4$):

Arrange the following polymers in increasing order of their intermolecular force.

Nylon 6,6 ;Buna-S; polythene; neoprene

1. 150.186

1 mole of monoatomic ideal gas undergoes the following operation



Select the incorrect relation.

Nitrates of I group ( except LiNO₃)
on heating give:

Pure water freezes at $273K\text{and}1bar$. The addition of $69g$ of ethanol to $500g$ of water changes the freezing point of the solution. Use the freezing point depression constant of water as $2Kkgmo{l}^{-1}$



The figures shown below represent plots of vapour pressure (V.P.) versus temperature (T). [Molecular weight of ethanol is $46gmo{l}^{-1}$]



Among the following, the option representing change in the freezing point is?

The reaction $H_{2}S+H_2{O}_2⟶2H_{2}O+S$ shows

$P-T$ diagram is shown below. Then choose the corresponding $V-T$ diagram

An excellent source of Sodium and chlorine is __ water.

When an ion leaves its correct lattice site and occupies interstitial sites in its crystal lattice,it is called

$K_p$ for the reaction $CuS{O}_4.3H_2{O}_{\left(s\right)}+2H_2{O}_{\left(g\right)}\to CuS{O}_4.5H_2{O}_{\left(s\right)}is1.0\times {10}^{4}at{m}^{-2}$ at certain temperature. What lowest relative humidity of air can be achieved using $CuS{O}_4.3H_{2}O$ as drying agent at that temperature ? Aqueous tension at the given temperature = 16 torr

The geometrical isomerism is shown by

The heat of combustion of carbon to $C{O}_2$ is $-393.5\text{kJ/mol.}$ The heat released upon formation of $35.2\text{g}$ of $C{O}_2$ from carbon and oxygen gas is:

Silicon has a strong tendency to form polymers like silicones. The chain length of silicones polymer can be controlled by adding:

What
is meant by the term bond order? Calculate the bond order of: N₂,
O₂,

and.

The van der Waals' equation for $0.5\text{mol}$ gas is:

How many unit cells are present in a cube-shaped ideal crystal of $NaCl$ of mass $1.00\text{g}$?

$(N_A=6\times {10}^{23})$

Following data has been given for $C{O}_2$ for the concentration in $H_{2}O.$

$\begin{array}{ccc}\text{Temperature}& \text{Henry's constant}& \text{Pressure}\\ 273K& 728atm& 0.10atm\\ 333K& 3410atm& p_2\end{array}$

If solution of $C{O}_2$ in $H_{2}O$ is heated from $273K$ to $333K$, pressure $\left(p_2\right)$ needed to keep $C{O}_2$ in the solution is :

The
coefficient of volume expansion of glycerin is 49 × 10^–5
K^–1.
What is the fractional change in its density for a 30 °C rise in
temperature?