Rusting of Iron is catalyzed by:

Interstitial transition metal compounds
(A) have higher melting points than those of pure metals.
(B) have more reactivity than those of pure metals.
(C) are non-stoichiometric compounds.
(D) formed when small atoms like H, C or N are trapped inside the crystal lattice of the metals.
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If we plot graph for first order reaction involving reactant R, then it will be a straight line if plotted for :

Aqueous NaCl solution is electrolysed. The product formed at anode is :

Match List I with List II

LIST I	LIST II
A. Solvent used in perfumes	I. Phenol
B. Starting material for picric acid	II. Glycerol
C. Wood Spirit	III. Methanol
D. By product of soap industry used in cosmetics	IV. Ethanol

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Arrange the following in increasing order of their molarity when their equal weights are dissolved in 250 mL of water.
(A) glucose \(\left(180 g mol ^{-1}\right)\)
(B) sodium carbonate (106 g mol-1)
(C) sodium hydroxide \(\left(40 g mol ^{-1}\right)\)
(D) acetic acid \(\left(60 g mol ^{-1}\right)\)
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Which is the correct IUPAC name of the compound \(CH _3 CH = CHC ( Br )\left( CH _3\right)_2 ?\)

Arrange the following in increasing order of their \(pK _a\) values.
(A) o-nitrophenol
(B) m-nitrophenol
(C) Phenol
(D) Ethanol
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A semicircular arc of radius R is charged uniformly and its linear charge density is \( \lambda \). What will the electric field be at its centre?

The work function for a metallic surface is 4.0 eV. The longest wavelength of light that can cause photoelectron emission is approximately:

Match List-I with List-II

List - I	List - II
(A) Angle between \(\hat{i}-\hat{j}\) and \(\hat{i}+\hat{j}\)	(I) \(\pi\)
(B) Angle between \(\hat{i}-\hat{j}+\hat{k}\) and \(-\hat{i}+\hat{j}-\hat{k}\)	(II) \(\frac{3 \pi}{4}\)
(C) Angle between \(\hat{i}+\hat{j}\) and \(-\hat{i}\)	(III) \(\frac{\pi}{4}\)
(D) Angle between \(\hat{i}+\hat{k}\) and \(\hat{k}\)	(IV) \(\frac{\pi}{2}\)

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The present value of a sequence of payments of Rs. \(2000\) made at the end of every \(6\) months and continuing forever, if money is worth \(8 \%\) per annum compounded semi-annually, is:

Read the Passage below and answer the question:
Aldehydes and Ketones, having atleast one methyl group linked to the carbonyl carbon atom (methyl Ketones), are oxidised by sodium hypohalite to sodium salts of corresponding carboxylic acids having one carbon atom less than that of carbonyl compound is converted to haloform. This oxidation does not affect a carbon - carbon double bond, if present in a molecule.
Which of the following statements are true?
A. \(CH_3CHO\) and \(CH_3CH_2CHO\) can be distinguished by Tollen's test.
B. \(CH_3CH_2CHO\) and \(CH_3COCH_3\) can be distinguished by Fehling's test.
C. \(CH_3CHO\) and \(C_6H_5CHO\) can be distinguished by Fehling's test.
D. \(HCHO, CH_3CHO\) can be distinguished by \(NaHCO_3\) test.
E. \(HCOOH, CH_3COOH\) can be distinguished by \(NaHCO_3\) test.
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