Paper no.2 CHEMISTRY

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MDCAT Chemistry Paper 2

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1.Acetamide is formed by dehydration of:

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2.The amino acids which are not prepared in human body are called:

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3.Indicate the cyclic amino acid from the following:

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4.At low pH or in acidic condition amino acid exists as:

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5.Which one of the following reagent is used for identification of amino acids?

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6.Which one of the following is an example of condensation polymer?

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7.Among the most common disaccharides, which one of the followings is present in the milk?

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8.Fats are a type of lipid called glycerides. They a are esters of long chain carboxylic acids:

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9.Which one of the following base is NOT present in RNA? 

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10.Collagen proteins are present in ___  throughout the body:

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11.is an eye irritant:

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12.Polystyrene is an addition polymer. Which one of the following structures represents the monomer of polystyrene?

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13.Which one of the following pollutants can cause death of a person by binding with haemoglobin of red blood cells?

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14.'Ka' values of few organic acids are given:

Acid                             Ka

CH3COOH                 1.85 x 10^-5

CCl3COOH                 2.3 x 10^-2

CHCl2COOH              5.0 × 10^-3

CH2ClCOOH              1.3 x 10^-3

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15.An organic acid 'z' reacts separately with sodium bicarbonate, sodium hydroxide and sodium carbonate. Which one of the following represent the structure of 'z'?

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16.Carboxylic acids are rather hard to reduce, which powerful reducing agent can be used to convert them to the corresponding primary alcohol:

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17.Which one of the following amino acids is basic in nature?

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18.How many moles of sodium are present in 0.1 g of:

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19.With the help of spectral data given calculate the mass of Neon and encircle the best option.

(Percentage of 10Ne20, 10Ne21 and 10Ne22 are 90.92%, 0.26% and 8.82% respectively).

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20.Which one of the following pairs has the same electronic configuration as possessed by Neon (Ne-10)?

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21.If the volume of a gas collected at a temperature of 600°C and pressure of 1.05 x 10^5 Nm^-2 is 60 dm³, what would be the volume of gas at STP (P=1.01 x 10^3 Nm^-2, T=273 K)?

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22.There are four orbitals s, p, d and f. Which is correct with respect to the increasing energy of order the orbitals?

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23.Which one of the following hydrogen bonds is stronger than others? 

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24.The half-life of N2O5 at 0°C is 24 minutes. How long will it take for sample of N2O5 to decay to 25% of its original concentration?

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25.When the change in concentration is 6 x 10^-4 mol dm^-3 and time for that change is 10 seconds, the rate of reaction will be: 

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26.Which one of the following will have the smallest radius?

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27.Keeping in view the size of atoms, which order is correct? 

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28.On the basis of oxidizing power of halogens, which reaction is possible? 

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29.Which one of the following gases for breathing by sea divers is used as mixture:

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30.[Ti(H2O)6]^+3 transmits:

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