MP PET Chemistry 2004

Total Questions:50 Total Time: 90 Min

Remaining:

 

Questions 1 of 50

Question:The purine base present in RNA is

Answers Choices:

Uracil

Guanine

Cytosine

Thymine

Questions 2 of 50

Question:For which of the reaction \(\Delta H = \Delta E\) ?

Answers Choices:

\(2Na + C{l_2} \to 2NaCl\)

\({N_2} + 3{H_2} \to 2N{H_3}\)

\({N_2} + {O_2} \to 2NO\)

\(PC{l_5} \to PC{l_3} + C{l_2}\)

Questions 3 of 50

Question:The nature of anode rays depends upon

Answers Choices:

Nature of discharge tube

Nature of residual gas

Nature of electrode

All the above

Questions 4 of 50

Question:The correct set of quantum numbers for the unpaired electron of Cl atom is.

Answers Choices:

n=2, l=1, m=1

n=3, l=1, m=1

n=2, l=1, m=0

n=3, l=0, m=0

Questions 5 of 50

Question:The orbital angular momentum of an electron in 2S orbital is

Answers Choices:

\(\frac{1}{2}.\frac{h}{{2\pi }}\)

\(\sqrt 2 .\frac{h}{{2\pi }}\)

zero

\(\frac{h}{{2\pi }}\)

Questions 6 of 50

Question:The bond lengths in the species \({O_2},O_2^ + \) and \(O_2^ - \) are in the order.

Answers Choices:

\(O_2^ + > {O_2} > O_2^ - \)

\(O_2^ + > O_2^ - > {O_2}\)

\(O_2^ - > O_2^ + > {O_2}\)

\(O_2^{} > O_2^{} > {O_2}^ + \)

Questions 7 of 50

Question:How many unpaired electrons are there in \(N{i^{ + + }}\)

Answers Choices:

2

5

8

1

Questions 8 of 50

Question:On addition of one ml of 10% NaCl solution to 10ml gold sol in the presence of 0.25gm of starch, the coagulation is just prevented, starch has gold number.

Answers Choices:

0.25

0.03

2.5

None of these

Questions 9 of 50

Question:Hydrocarbon \({C_6}{H_6}\) decolourises \(B{r_2}\) water and gives ppt with \(AgN{O_3}\) hydrocarbon can be.

Answers Choices:

1,5 hexadiyne

2,4 hexadiyne

1,3,5-cyclohexatriene

None of these

Questions 10 of 50

Question:The nucleus of an element contains nine protons. Its valency would be

Answers Choices:

5

1

7

9

Questions 11 of 50

Question:Which is not a buffer solution ?

Answers Choices:

\(C{H_3}COOH + C{H_3}COONa\)

\(C{H_3}COON{H_4}\)

\(N{H_4}Cl + N{H_4}OH\)

Borax+Boric acid

Questions 12 of 50

Question:The bonds in \({K_4}\left[ {Fe{{\left( {CN} \right)}_6}} \right]\) are.

Answers Choices:

Ionic and covalent

All covalent

All ionic

Ionic, covalent and co-ordinate covalent

Questions 13 of 50

Question:The colour of hydrogen is

Answers Choices:

Black

Colourless

Yellow

Orange

Questions 14 of 50

Question:Chile saltpeter is

Answers Choices:

\(KN{O_3}\)

\(N{a_2}S{O_4}\)

\(N{a_2}{S_2}{O_3}\)

\(N{a_2}N{O_3}\)

Questions 15 of 50

Question:Maximum number of H-bonds formed by a water molecule is

Answers Choices:

2

4

8

1

Questions 16 of 50

Question:At normal room temperature iodoform is

Answers Choices:

Volatile liquid

Thick viscous liquid

Gas

Solid

Questions 17 of 50

Question:Addition of HCl to Vinyl chloride gives 1,1 dichloroethene because of.

Answers Choices:

Restricted rotation around double bond

Inductive effect of Cl

Mesomeric effect of Cl

None of these

Questions 18 of 50

Question:Osmotic pressure of a urea solution at \({10^0}C\) is 500mm. Osmotic pressure of the solution becomes 105.3mm. When it is diluted and temperature raised to \({25^0}C\). The extent of dilution is.

Answers Choices:

8 times

5 times

4 times

7 times

Questions 19 of 50

Question:Polymer used in bullet proof glass is.

Answers Choices:

Lexane

PMMA

Kevlar

Nomex

Questions 20 of 50

Question:The edge of unit cell of fcc Xe crystal is 620 pm. The radian of Xe atom is.

Answers Choices:

209.87 pm

240 pm

219.25 pm

189.37 pm

Questions 21 of 50

Question:The main structural feature of proteins is.

Answers Choices:

Peptide linkage

Ether linkage

Ester linkage

All of these

Questions 22 of 50

Question:The electronic configuration of outermost shell of the most electronegative element is.

Answers Choices:

\(n{s^2}n{p^5}\)

\(n{s^2}n{p^3}\)

\(n{s^2}n{p^4}\)

\(n{s^2}n{p^6}\)

Questions 23 of 50

Question:Splitting of spectral lines under the influence of magnetic field is called.

Answers Choices:

Photoelectric effect

Stark effect

Zeeman effect

None of these

Questions 24 of 50

Question:Allyl cyanide contains \(\sigma \) and \(\pi \) bonds.

Answers Choices:

\(5\sigma ,7\pi \)

\(9\sigma ,3\pi \)

\(3\sigma ,4\pi \)

\(9\sigma ,9\pi \)

Questions 25 of 50

Question:In the reaction, \({I_2} + 2{S_2}O_3^{ - - } \to 2I + {S_4}O_6^{ - - }\) equivalent weight of iodine will be equal to.

Answers Choices:

4/6 of molecular weight

Molecular weight

2/9 of molecular weight

Twice the molecular weight

Questions 26 of 50

Question:IUPAC name of Gammaxene is

Answers Choices:

1,2,3,4,5,6 hexachloro cyclohexane

Hexachlorobenzene

Benzene hexachloride

1,2,3,4,5,6 hexachloro benzene

Questions 27 of 50

Question:50ml, of 1M oxalic acid is shaken with 0.5gm of wood charcoal. The final concentration of the solution after adsorption is 0.5M. Amount of oxalic acid adsorbed per gm of charcoal is.

Answers Choices:

3.45 gm

3.15 gm

6.30 gm

None of these

Questions 28 of 50

Question:Which is correct for an adiabatic process ?

Answers Choices:

\(P\Delta V = 0\)

\(\Delta E = q\)

\(\Delta E = - q\)

\(\Delta E = + W\)

Questions 29 of 50

Question:Carnallite is.

Answers Choices:

\(MgC{l_2}.6{H_2}O\)

\(LiAl{(Si{O_2})_2}\)

\(KCl.MgC{l_2}.6{H_3}O\)

\(KCl\)

Questions 30 of 50

Question:The compound added to prevent chloroform to form phosgene gas (poisonous gas) is.

Answers Choices:

\(C{H_3}COOH\)

\(C{H_3}OH\)

\(C{H_3}COC{H_3}\)

\({C_2}{H_5}OH\)

Questions 31 of 50

Question:Which of the following reaction is useful for the preparation of \(\alpha \)-Bromoacetic acid ?

Answers Choices:

Hell-Volhard-Zelinksy reaction

Perkin reaction

Reimer-Tiemann reaction

Kolbe’s reaction

Questions 32 of 50

Question:Which of the following is most acid

Answers Choices:

o-p-nitrophenol

Picric acid

p-nitrophenol

m-nitrophenol

Questions 33 of 50

Question:In the reaction $$\buildrel {oxidation} \over\longrightarrow A\buildrel {NaOH} \over\longrightarrow B\buildrel {Soda\lim e} \over\longrightarrow C$$ the product C is.

Answers Choices:

\({C_6}{H_6}COONa\)

\({C_6}{H_6}\)

\({C_6}{H_5}OH\)

\({C_6}{H_5}ONa\)

Questions 34 of 50

Question:Which of the following is used in the preparation of nylon ?

Answers Choices:

Isoprene

Ethylene

Adipic acid

Butadiene

Questions 35 of 50

Question:A solution of \(A{l_2}{(S{O_4})_3}\) \((d = 1.253)gm/ml)\) contains 22% salt by weight. The molarity, normality and molality of the solution is.

Answers Choices:

0.825M, 48.3N, 0.805m

0.805M, 4.48N, 0.825m

4.83M, 4.83N, 4.83m

None of these

Questions 36 of 50

Question:In the reaction, \(P + NaOH \to P{H_3} + Na{H_2}P{O_2}\)

Answers Choices:

Na is reduced

P is oxidized as well as reduced

P is oxidized only

P is reduced only

Questions 37 of 50

Question:The number of \(\alpha \) and \(\beta \) particles emitted when a radioactive element \(_{90}{E^{232}}\) changes into \(_{86}{G^{220}}\) will be

Answers Choices:

3,2

4,8

9,3

4,1

Questions 38 of 50

Question:The compressibility factor of a gas is less than unity at STP. Its molar volume \({V_m}\) will be.

Answers Choices:

\({V_m} > 35.4\,\,litre\)

\({V_m} = 44.8\,\,litre\)

\({V_m} = 23.4\,\,litre\)

\({V_m} < 22.4\,\,litre\)

Questions 39 of 50

Question:The total number of electrons that takes part in forming bonds in \({N_2}\) is.

Answers Choices:

6

3

2

15

Questions 40 of 50

Question:The compressibility factor for an ideal gas is.

Answers Choices:

1

3.8

9

\(\infty \)

Questions 41 of 50

Question:The unit of velocity constant in case of Zero-order reaction is.

Answers Choices:

Concentration \(^{ - 1}\) \( \times \) time \(^{ - 1}\)

Concentration \( \times \) time\(^{ - 1}\)

Concentration\(^{ - 1}\) \( \times \) time

Concentration \( \times \) time \(^2\)

Questions 42 of 50

Question:Cinnabar is an ore of.

Answers Choices:

Zn

Cu

HgS

Pb

Questions 43 of 50

Question:Three molecules of acetone in the presence of dry HCl form.

Answers Choices:

Phorone

Glyoxal

Mesityl oxide

Mesithylene

Questions 44 of 50

Question:In the reaction, \({A_2}(g) + 4{B_2} \leftrightarrow 2A{B_4}(g)\) the formation of \(A{B_4}(g)\) will be favoured at.

Answers Choices:

Hight temperature, Low pressure

Low temperature, High pressure

High temperature, High pressure

Low temperature, Low pressure

Questions 45 of 50

Question:Oil of vitriol is.

Answers Choices:

\({H_2}S{O_3}\)

\({H_2}S{O_4}\)

\({H_2}{S_2}{O_8}\)

\({H_2}{S_2}{O_7}\)

Questions 46 of 50

Question:Which of the following salt is insoluble in water ?

Answers Choices:

\(PbS{O_4}\)

\(CuS{O_4}\)

\(CdS{O_4}\)

\(B{i_2}{\left( {S{O_4}} \right)_3}\)

Questions 47 of 50

Question:Silver mirror test can be used to disinteguish the following pairs.

Answers Choices:

Phenol and Acid

Alcohol and Phenol

Aldehyde and Acid

Ketone and Acid

Questions 48 of 50

Question:The formula of feron -12 is.

Answers Choices:

\(CCl{F_3}\)

\(C{H_2}C{l_2}\)

\(CC{l_2}{F_2}\)

\(C{H_2}{F_2}\)

Questions 49 of 50

Question:How many grams of  \(Ca{C_2}{O_4}\)(molecular weight = 128) on dissolving in distilled water will give a saturated solution? [\(Ksp\left( {Ca{C_2}{O_4}} \right) = 2.5 \times {10^{ - 9}}mo{l^2}{l^{ - 2}}\)]

Answers Choices:

1.2800 g

0.1280 g

0.0128 g

0.0064g

Questions 50 of 50

Question:For which of the following the bond angle will be minimum :

Answers Choices:

\({H_2}O\)

\({H_2}S\)

\({H_2}Se\)

\({H_2}Te\)