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The oxidation state of $Al$ in $AlC{l}_3$ is

Which of the following will form a tribromo derivative of phenol?

Uncertainity in position is twice the uncertainity in momentum uncertainity in velocity is :

The names of the following compounds are respectively?

The correct order of increasing radii are

Physical
adsorption

Wavelengths of different radiations are given below:

$\lambda \left(A\right)=300\text{nm}\lambda \left(B\right)=300\mu \text{m}$

$\lambda \left(C\right)=30\text{nm}\lambda \left(D\right)=30\stackrel{\circ }{A}$

Arrange these radiations in the increasing order of their energies:

A chloride of vanadium has a magnetic moment of 1.732 BM. It's formula could be:

Which of the following will not conduct electricity in aqueous solution

[AMU 1982, 83]

Le Chatelier's principle is not applicable for which of the following reaction?

Which option does not have the correct order of dipole moments?

A solution of glucose ($C_6{H}_{12}{O}_6$) is isotonic with 4 g of urea $(H_{2}N-CO-N{H}_2)$ per litre of solution. The concentration of glucose is:

Complete the following

$2A{l}_2{O}_3+3C\to 4A+3B$. A & B are as follows.

Which of the following compounds produce 1,5-cyclooctanedione on ozonolysis?

Predict the order of ${\Delta }_o$ for the following compounds:-

(i) $\left[Cr\right(H_{2}O{)}_6{]}^{3+}$

(ii) $\left[Cr\right(CN{)}_2(H_{2}O{)}_4{]}^{-}$

(iii) $\left[Cr\right(CN{)}_4(H_{2}O{)}_2{]}^{-}$

(iv) $\left[Cr\right(CN{)}_6{]}^{3-}$

Which carbocation is more likely to be formed in

dehydration of

Which of the following amines is/are resolvable?

Which of the following is a neutral electrophile?

Which of the following is not formed by the reaction of Cl₂ on CH₄ in sunlight

In which of the following cases incorrect direction of inductive effect is / are shown?

For which one of the following homogenous equilibrium equations will K_p equal K_c?

Identify (X) to (Z) in the following sequence of reactions -

$CaO+C\stackrel{{2000}^{\circ }C}{\to }\left(X\right)+\left(Y\right){1100}^{\circ }C\downarrow +N_2\left(z\right)\stackrel{hydrolysis}{\to }\left(P\right)\text{gas}$

A valid Lewis structure cannot be drawn for which of the following compounds?

The pressure under which liquid and vapour can coexist at equilibrium is called the

Which of the following molecules represents the order of hybridisation $s{p}^2$, $s{p}^2$, $sp$, $sp$ from left to right?

Schottky
defect in crystals is observed when

[CBSE PMT
1998; KCET 2002]

Ratio of radii of second and first orbits of $H$ atom is:

In the reaction $C_2{H}_{5}CH=C{H}_2+H-X\to Product.$ What is the product

The most stable conformation of trans-1,4-dimethylcyclohexane is represented as:

Which of the following free radicals is pyramidal?

The common features among the species $C{N}^{-},COandN{O}^{+}$ are

Which of the following reaction does not involve in neither oxidation nor reduction?

The correct order of atomic radii for the following isoelectronic species $F^{-},O^{2-},N{a}^{+},M{g}^{2+}$ is:

In a zero order reaction for every ${10}^{\circ }C$ rice of temperature, the rate is doubled. If the temperature is increased from ${10}^{\circ }C$ to ${100}^{\circ }C$, the rate of the reaction will become:

A binary liquid solution is prepared by mixing n-heptane and ethanol. Which one of the following statements is correct regarding the behaviour of the solution ?

If $\alpha$ is the degree of dissociation of $N{a}_{2}S{O}_4$ the van't Hoff''s factor $\left(i\right)$ used for calculating the molecular mass is

Which of the following is a liquid at room temperature?

Given below are some statements contrasting Hydrometallurgy and pyrometallurgy. Which of the following are the advantages of Hydrometallurgy (leaching)?

On addition of 0.8 mL of solution of 10% NaCl to 30 mL of red gold sol in presence of 0.03 g of starch, the coagulation is just prevented. The gold number of starch is

Which of the following is/are diastereomer pair(s)?

Which of the following is the least reactive towards nucleophillic addition reaction?

Identify the oxidant and the reductant in the following reaction:

$2FeC{l}_2+H_2{O}_2+2HCl\to 2FeC{l}_3+2H_{2}O$

Which of the following has Germicidal property?

Which among the following pairs are paramagnetic?

Which of the following compounds are not hydrolysed?