Indian Institute of Technology Mumbai (IIT-M) 2006 Entrance Exams IIT Entrance Exams IIT Chemistry - Question Paper

a few basic Concepts of Chemistry

Straight Objective kind Questions: -

1. How many g of KCL would have to be dissolved in 60g H2O to provide 25% by wt. of solution?

(a) 20 g

(b) 1.5 g

(c) 11.5 g

(d) 31.5 g

2. If one mole of ethanol (C2H5OH) completely burns to CO2 and H2O, the weight of CO2 formed is about

(a) 22 g

(b) 45 g

(c) 66 g

(D) 88 g



3. When 10 g of propane us made to react with 4g of O2 then weight of CO2 produced will be :

(a) 9.98 g

(b) 3.3 g

(c) 4.4 g

(d) 5.5 g



4. 1.12 ml gas is produced at STP by the action of 4.12 mg of alcohol, ROH with methyl magnesium iodide. The molecular mass of alcohol is

[ ROH + CH3MgI à CH4 + RO-Mg+I ]

(a) 16.0

(b) 41.2

(c) 82.4

(d) 156.0



5. How many grams of NaOH will be needed to prepare 250mL of 0.1 M solution?

(a) 1g

(b) 10g

(c) 4g

(d) 6g

6. An ore contains 1.34 % of the mineral argentite, Ag2S, by weight. How many grams of this ore would have to be processed in order to find 1.00 g of pure solid silver, Ag?

(a) 74.6 g

(b) 85.7 g

(c) 134.0 g

(d) 171.4 g



7. Hydrogen evolved at NTP on complete reaction of 27gm of Al with excess of aq. NaOH would be

(a) 22.4 litre

(b) 44.8 litre

(c) 67.2 litre

(d) 33.6 litre



8. 12 g of Mg (At mass = 24) will react with an acid to provide

(a) 1 mole of H2

(b) 1 mole of O2

(c) half mole of O2

(d) half mole of H2



9. At which of the 4 conditions, the density of nitrogen will be largest?

(a) STP

(b) 273 K and two atm

(c) 546 K and one atm

(d) 546 K and two atm



10. Under identical conditions of temperature, the density of a gas X is 3 times that of gas Y while molecular mass of gas Y is twice that of X. The ratio of pressures X and Y will be :

(a) 6

(b) 1/6

(c) 2/3

(d) 3/2



11. A gaseous mixture of two moles of A, three moles of B, five moles of C and 10 moles of D is contained in a vessel. Assuming that the gases are ideal and the partial pressure C is 1.5 atm the total pressure is :

Earning:   Approval pending.