Paper no.1 CHEMISTRY

60
Created on By buzzerkings

MDCAT Chemistry Paper 1

1 / 30

1.A polymer of empirical formula CH2 has molar mass of 28000 g mol^-1. Its molecular formula will be: 

2 / 30

2.The number of molecules in 9g of ice (H2O) is:

3 / 30

3.Ice is less dense than water at:

4 / 30

4.At a given temperature and pressure, the one which shows marked deviation from ideal behavior is:

5 / 30

5.If the e/m value of electron is 1.7588 x 10^11 coulombs Kg^-1, then what would be the mass of electron in grams (charge on electron is 1.6022 x 10^-19 coulombs)?

6 / 30

6.When the two partially filled atomic orbitals. overlap in such a way that the probability of finding electron is maximum around the line joining the two nuclei, the result is the formation of:

7 / 30

7. 2H2 + O2 → 2H2O     △H=+285.5 kJ mol What will be the enthalpy change in the above reaction?

8 / 30

8.Combustion of graphite to form CO2 can be done by two ways. Reactions are given as follows:

C+O2 CO2    △H= -393.7 kJ mol^-1

C+ ½O2 CO    △H= ?

CO+ ½ O2 → CO2  △H= -283 kJ mol^-2

What will be enthalpy of formation of CO? 

9 / 30

9.The value of equilibrium constant (Kc) for the reaction

2HF H2 + F2 is 10^-13 at 2000°C

Calculate the value of Kp for this reaction:

10 / 30

10.Coinage metals Cu, Ag, and Au are the least reactive because they have: 

11 / 30

11.What will be the pH of a solution of NaOH with a concentration of 10^-3 M?

12 / 30

12.If the reactant or product of a chemical reaction absorb ultraviolet, visible or infrared radiation, then the rate of a chemical reaction can best be measured by which one of the following methods?

13 / 30

13.For the reaction 2NO+O2 2NO2 the rate

equation for the forward reaction is:

14 / 30

14.Radon is used in emitter and being radioactive is treatment in radiotherapy:

15 / 30

15.Arrange the following elements according to the trend of ionization energies. (C, N, Ne, B)

16 / 30

16.Which one of the following noble gases is used for providing an inert atmosphere for welding? 

17 / 30

17.The percentage of carbon in different types of iron products is in the order of:

18 / 30

18.Which one of the following is the correct chemical

reaction for Ammonia formation by Haber process? 

19 / 30

19.The pH of acid rain is:

20 / 30

20.Which one of the following products is obtained when sulphur trioxide is absorbed in concentrated sulphuric acid?

21 / 30

21.Which one of the following compound is a ketone?

22 / 30

22.Addition of unsymmetrical reagent to unsymmetrical alkene is governed by: 

23 / 30

23.Ethylene glycols are used as: 

24 / 30

24.The halothane used in hospitals as an anesthetic is chemically:

25 / 30

25.If halogenoalkanes are mixed with an excess of ethanoic ammonia and heated under pressure, amine are formed. Which amine is formed in the following reaction?

CH2CH3Br+NH3 Amine

26 / 30

26.Primary, secondary and tertiary alcohols can be identified and distinguished by: 

27 / 30

27.Which one of the following alcohol is indicated by formation of yellow crystals in Iodoform test? 

28 / 30

28.Ethyl butyrate and butyl butanoate are esters with the flavor of:

29 / 30

29.Which one of the following groups is indicated when HCI is formed by reaction of ethanol with phosphorous pentachloride?

30 / 30

30.A student mixed ethyl alcohol with small amount of sodium dichromate and added it to the hot solution of dilute sulphuric acid. A vigorous reaction took place. He distilled the product formed immediately. What was the product?

Your score is

The average score is 55%

0%

3 thoughts on “Paper no.1 CHEMISTRY”

Leave a Comment

Your email address will not be published. Required fields are marked *