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Which of the following is coloured tetrahedral complex species?

Which of the following foodstuffs contains nitrogen

The minimum amount of $A{g}_{2}C{O}_3\left(\text{s}\right)$ required to produce sufficient oxygen for the complete combustion of $C_2{H}_2$, which produces $11.2\text{L}$ of $C{O}_2$ at STP after combustion is: $[Ag=108]$

$A{g}_{2}C{O}_3\left(s\right)\to 2Ag\left(s\right)+C{O}_2\left(g\right)+\frac{1}{2}{O}_2\left(g\right)$

$C_2{H}_2+\frac{5}{2}{O}_2\to 2C{O}_2+H_{2}O$

What is the correct relationship between the pHs of isomolar solutions of sodium oxide $\left(p{H}_1\right),$ sodium sulphide $\left(p{H}_2\right),$ sodium selenide $p{H}_3)$ and sodium telluride $p{H}_4)$ ?

The following structure has five different types of C-H bonds, mark a to e







Arrange the five C-H bonds in decreasing order of their bond energy.

The stability order of the following carbocations is :

An atomic orbital has a total of 4 nodes in which two are radial nodes. The orbital is:

Which of the following compounds has the highest value of $p{K}_a$?

What is the oxidation number of $Mn$ in $KMn{O}_4$ and of $S$ in $N{a}_2{S}_2{O}_3$ ?

$H_{3}B{O}_3\stackrel{T_1}{⟶}\times \stackrel{T_2}{⟶}Y\stackrel{Redhot}{⟶}{B}_2{O}_3$

If $T_1$$<$$T_2$ then X and Y respectively are

The frequency of a wave is $6\times {10}^{15}{\text{s}}^{-1}$. Its wave number will be:

When excess of ammonia reacts with bleach, it can form:

Oxidation number of nitrogen "$N$" in $N_2{H}_5^{+}$​ is :

In electrolytic reduction of a nitroarene with 50% current efficiency, 20.50 g of the compound is reduced by $2\times 96500$ C of electric charge. The molar mass of the compound is :

(IV) More number of hydrogen bonds

Aqueous solution of borax reacts with two mol of acids. This is because of -

Which of the following compound can react with hydroxylamine ?

Equation $H_{2}S+H_2{O}_2\to S+2H_{2}O$ represents

The species which has $5^{th}$ ionisation potential equal to 340 eV is:

5 moles of oxygen are heated at constant volume from $10{}^{\circ }Cto20{}^{\circ }C.$ What will be the change in the internal energy of gas?

(The molar heat of oxygen at constant pressure, $C_p=7.03$ cal mol${}^{-1}$ K${}^{-1}$ and $R=8.31J$ mol${}^{-1}{K}^{-1}$)

The paramagnetic species among the following is:

$N{a}^{+},Z{n}^{2+},C{u}^{+},F{e}^{3+}$

Which of the following species is most stable?

Intermolecular forces of attraction in NaCl is __than water.

In which of the following pairs, the difference between the covalent radii of two metals is maximum?

What is the oxidation number of $Zn$ in the following molecule:

$Zn{O}_2^{2-}$

The raw materials used in solvay's process are as follows :

In which of the following reactions does $N{H}_3$ act as an acid ?

The addition of $HCl$ to vinyl chloride gives 1,1-dichloroethane because of?

Treatment of concentrated solution of borax with calculated quantity of sulphuric acid gives

In the following reaction, the major products E and F respectively are:

What will be the normality of a solution obtained by mixing $0.5NCa(OH{)}_2$ and $0.5NMg(OH{)}_2$ solution in the ratio $1:5$ by volume?

Which of the following is a 3⁰ amine?

The value of $\gamma =$ $\frac{C_p}{C_v}$ for hydrogen, helium and another ideal diatomic gas X, are respectively equal to:

Which of the following compounds has shortest $B-F$ bond length?

Which of the following is a non-Norcotic analgesic ?

An organic compound contains 40% of C, 6.66 % of H, 53.34 % of O. Predict it's molecular formula. The density of the compound at STP is 0.00535 g/mL.

Water boils at lower temperature on high altitudes because:

A radioactive material decays by simulataneous emission of two particles with half - lives 1620 and 810 years. The time after which one - fourth of the material remains, is

The equilibrium pressure of $N{H}_{4}CN\left(s\right)\rightleftharpoons N{H}_3\left(g\right)+HCN\left(g\right)$ is $0.3\text{atm}$. Calculate $K_p$ If $N{H}_{4}CN\left(S\right)$ is allowed to decompose in presence of $N{H}_3$ at $0.25\text{atm}$. Calculate partial pressure of $HCN$ at equilibrium.

$(\text{Given}:\sqrt{0.1525}\approx 0.39)$

The structure of the compound whose IUPAC name is 3-Ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid is?

Which of the following is not a negative sols?