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The anomalous behaviour of first element of s and p block elements of each group as compared to other group members is due to following reasons:

If P = {pink flowers}, R = {roses}, then P ∩ R represents

Which of the following words has been formed using a negative prefix?

The mass of 112 ml of N₂ at STP on liquefaction is:

The formula for calculation of n-factor $\left(n_f\right)$ for a disproportionation reaction is given as:

Which is the correct combination of products collected over anode and cathode respectively in order to prepare hydrogen by electrolysis of water?

${18}_O$ will be in-

Which of the following is True for conformational isomerism?

Starch paper is used to test for presence of

The ion having highest mobility in aqueous solution is-

In the following electronic configuration, some rules have been violated:

I:Hund

II: Pauli’s exclusion

III: Aufbau

A body initially at 80 degree Celsius cools to 64 degree Celsius in 5 minutes and to 52 degree Celsius in 10 minutes. The temperature of the body after 15 minutes will be.......

Which of the following polymers are used as fibre?

(a) Polytetrafluoroethane

(b) Polychloroprene

(c) Nylon

(d) Terylene

Let the bond order of ${O_2}^{2-}$ be X and that of $CO$ be Y. Then the value of XY is _____?

The freezing point (in ${}^{\circ }C$) of a solution containing 0.1 g of $K_3\left[Fe\right(CN{)}_6\left]\right(molwt=329)$ in 100 g of water $(kf=1.86Kkg/mol)$ is

The systematic IUPAC name of the compound is?

$C{H}_3-\stackrel{C_2{H}_5}{\stackrel{|}{\underset{C_2{H}_5}{\underset{|}{C}}}}-C{H}_{2}Cl$

The internal energy of a gas is given by $U=\alpha P,$ where $\alpha$ is constant & $P$ is pressure. If the gas is diatomic, then molar heat capacity of the gas is

Which of the following is/are pyrosilicate?

Hot conc. $H_{2}S{O}_4$ acts as moderately strong oxidizing agent. It oxidises both metals and non-metals. Which of the following element is oxidized by conc. $H_{2}S{O}_4$ into 2 gaseous products?

Lthium metal crystallises in a body centred cubic crystal. If the length of the side of the unit cell of lithium is $351pm$, the atomic radius of the lithium will be :-
($\sqrt{3}=1.732$)

Which of the following can't be used in Friedal Craft's reactions?

What is the maximum value of x?

A patient is asked to drink BaSO₄ solution for examining the stomach by X-rays, because X-rays are:

When $Xe{F}_4$ is treated with water, which of the following compounds is not formed ?

A compound of B (Boron), X reacts at ${200}^{\circ }C$ with $N{H}_3$ to give another compound Y which is called as inorganic benzene. The compound Y is colorless liquid and is highly light sensitive. The compound X with excess of $N{H}_3$ and at still higher temp gives $(BN{)}_n$. The compound X and Y respectively.

propanol and propan-2-ol this pair of compounds exhibits ------------- isomerism

Consider following equilibrium at $400K$ and $30atm$
$3A\left(g\right)\rightleftharpoons 2B\left(g\right)+2C\left(g\right)+D\left(g\right)$
If the equilibrium pressure of $A$ is $5atm$ then $K_c$ will be:

Calculate average oxidation number of $S$ in $S_4{O}_6^{2-}$ respectively.

Stearic acid $\left[C{H}_3\right(C{H}_2{)}_{16}C{O}_{2}H]$ is a fatty acid. $1.0g$ of stearic acid was burned in a bomb calorimetre. The bomb had a heat capacity of $652J{/}^{\circ }C$. If the temperature of $500g$ water $(c=4.18J/g{}^{\circ }C)$ rose from $25.0to39.3{}^{\circ }C$, how much heat was released when the stearic acid was burned? [Given $C_p\left(H_{2}O\right)=4.18J/g{}^{\circ }C]$

Dehydrohalogenation of an alkyl halide is a/an?

The correct order for decreasing stability of the following free radicals is

Of the following compounds, the one having a linear structure is

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The ionic radii (in Å) of N³¯, O²¯ and F¯ are respectively:

When a light of wavelength ${}^{\prime }{\lambda }^{\prime }$ falls on the surface of a metal with threshold wavelength ${}^{\prime }{\lambda }_0^{\prime }$, an electron of mass $\frac{m}{2}$ is emitted. The de Broglie wavelength of emitted electron is:

Which of the following equations respresents a population growing in a habitat with limited resources?

A solution containing $2.675g$ of $CoC{l}_3.6N{H}_3$ (Molar Mass = $267.5g/mol$) is passed through a cation exchanger. The chloride ions obtained in solution were treated with an excess of $AgN{O}_3$ to give $4.78g$ of $AgCl$ (Molar mass = $143.5g/mol$). The formula of the complex is

Which of the following are iso-electronic and iso-structural?

$N{O}_3^{-}$, $C{O}_3^{2-}$, $Cl{O}_3^{-}$, $S{O}_3$

Hard water when passed through an ion exchange resin containing $RCOONa$ group becomes free from

Given
$Cu{I}_{\left(s\right)}+e^{-}⟶C{u}_{\left(s\right)}+I_{\left(aq\right)}^{-};E^{\circ }=-0.188V...\left(i\right)C{u}_{\left(aq\right)}^{2+}+I^{-}+e^{-}⟶Cu{I}_{\left(s\right)};E^{\circ }=0.868V...\left(ii\right)K_{sp}\left(CuI\right)={10}^{-12}{M}^2...\left(iii\right)$
$\frac{298Rln10}{F}=0.059$
List -1 contains half cells and List-2 contains emf values of half cells

$\begin{array}{cccc}& \text{List - I}& & \text{List - II}\\ \text{(P)}& C{u}_{\left(aq\right)}^{+}+e^{-}⟶C{u}_{\left(s\right)};E_1^0=& \text{(1)}& 0.34V\\ \text{(Q)}& C{u}_{\left(aq\right)}^{2+}+e^{-}⟶C{u}_{\left(aq\right)}^{+};E_2^0=& \text{(2)}& 0.16V\\ \text{(R)}& C{u}_{\left(aq\right)}^{2+}+2e^{-}⟶C{u}_{\left(s\right)};E_3^0=& \text{(3)}& 0.52V\\ \text{(S)}& C{u}_{\left(1M\right)}^{2+}+I_{\left({10}^{-12}M\right)}^{-}+e^{-}⟶CuI\left(s\right);E_4=& \left(4\right)& (E_1^0-E_3^0-0.02)V\\ & & \text{(5)}& 2\times E_2^0+0.02\end{array}$
Match the emf of cell in LIST-I with one or more values in LIST-II and choose the correct option.