Bromination of cyclohexene under conditions given below yields :

Decomposition of H2O2 follows a first order reaction. In fifty minutes the concentration of H2O2 decreases from 0.5 to 0.125 M in one such decomposition. When the concentration of H2O2 reaches 0.05 M, the rate of formation of O2 will be :

The rate law for the reaction below is given by the expression k [A] [B] A + B $$\to$$ Product If the concentration of B is increased from 0.1 to 0.3 mole, keeping the value of A at 0.1 mole, the rate constant will be :

The reaction of ozone with oxygen atoms in the presence of chlorine atoms can occur by a two step process shown below : O3(g) + Cl$${}^{\bullet }$$ (g) $$\to$$ O2(g) + ClO$${}^{\bullet }$$ (g) . . . . . .(i) ki = 5.2 × 109 L mol−1 s−1 ClO$${}^{\bullet }$$(g) + O$${}^{\bullet }$$(g) $$\to$$ O2(g) + Cl$${}^{\bullet }$$ (g) . . . . . . (ii) kii = 2.6 × 1010 L mol−1 s−1 The closest rate constant for the overall reaction O3(g) + O$${}^{\bullet }$$ (g) $$\to$$ 2 O2(g) is :

For a linear plot of log (x/m) versus log p in a Freundlich adsorption isotherm, which of the following statements is correct ? (k and n are constants)

Gold numbers of some colloids are : Gelatin : 0.005 - 0.01, Gum Arabic : 0.15 - 0.25; Oleate : 0.04 - 1.0; Starch : 15 - 25. Which among these is a better protective colloid ?

The most appropriate method of making egg-albumin sol is :

A particular adsorption process has the following characteristics : (i) It arises due to van der Waals forces and (ii) it is reversible. Identify the correct statement that describes the above adsorption process :

$$2$$-chloro-$$2$$-methylpentane on reaction with sodium methoxide in methanol yields:

The product of the reaction given below is :

Bouveault-Blanc reduction reaction involves :

The gas evolved on heating CH3MgBr in methanol is :

Sodium extract is heated with concentrated HNO3 before testing for halogens because :

The volume of 0.1N dibasic acid sufficient to neutralize 1 g of a base that furnishes 0.04 mole of OH− in aqueous solution is :

The pair in which phosphorous atoms have a formal oxidation state of +3 is :

Identify the incorrect statement :

Assertion : Among the carbon allotropes, diamond is an insulator, whereas, graphite is a good conductor of electricity. Reason : Hybridization of carbon in diamond and graphite are sp3 and sp2, respectively.

Aqueous solution of which salt will not contain ions with the electronic configuration 1s22s22p63s23p6 ?

Match the items in Column I with its main use listed in Column II : .tg {border-collapse:collapse;border-spacing:0;border-color:#999;width:100%} .tg td{font-family:Arial, sans-serif;font-size:14px;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:#999;color:#444;background-color:#F7FDFA;} .tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:#999;color:#fff;background-color:#26ADE4;} .tg .tg-0xlv{font-weight:bold;font-size:22px;border-color:inherit;text-align:center} .tg .tg-c4o0{font-size:22px;border-color:inherit;text-align:left} Column I Column II (A) Silica gel (i) Transistor (B) Silicon (ii) Ion-exchanger (C) Silicone (iii) Drying agent (D) Silicate (iv) Sealant

The non-metal that does not exhibit positive oxidation state is :