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Old June 13th, 2016, 05:17 PM
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Join Date: May 2011
Default Re: AFMC Model Test Paper

The Model question paper for the AFMC entrance examination required for reference purpose is as follows:

SET 1 :- ( PHYSICS & CHEMISTRY)

1. If the velocity of light C, the universal gravitational constant G and Planck’s constant h be chosen as fundamental quantities then the dimensions of mass is this system

a. hCG

b. hCG–1

c. h–1C–1G

d. h1/2C1/2G–1/2

2. The force F acting on a particle in terms of time t and distance x is given by

F = (AcosBx) (CsinDt)

The dimensions of (AC) and (BD) respectively are

a. MLT–2, M0L–1T1

b. MLT–2, ML–1T–1

c. ML2T–2, M0L–1T–2

d. MLT–2, M0L–1T–1

3. The density of a material in the CGS system is 8 g/cm3. In a system in which the unit of length is 5 cm and the unit of mass is 20 g, the density is

a. 16 units

b. 25 units

c. 32 units

d. 50 units

4. Two forces P and Q acting at a point are such that if P is reversed, the direction of the resultant is turned through 90°. Then

a. P = Q

b. P = 2Q

c. P = Q/2

d. Non relation between P & Q

5. Of the following which one has dimensions different from the remaining three

a. Energy per unit volume

b. Force per unit area

c. Stress × strain

d. Force × area

6. How many moles of HCl will be present in 100 mL of a solution of specific gravity 1.08, containing 20% HCl by mass ?

a. 0.50

b. 0.60

c. 0.80

d. 0.12

7. The solubility of K2SO4 in water is 16g at 50°C. The minimum amount of water required to dissolve 4g K2SO4 is:

a. 10g

b. 25g

c. 50g

d. 75g

8. 1.0 g of pure calcium carbonate was found to require 50 mL of dilute HCl for complete reactions. The strength of the HCl solution is given by:

a. 4 N

b. 2 N

c. 0.4 N

d. 0.2 N

9. In Haber process, 30 L of dihydrogen and 30L of dinitrogen were taken for reaction which yielded only 50% of the expected product. What will be the composition of the gaseous mixture under the aforesaid conditions in the end?

a. 20 L NH3, 25 L N2 and 20 L H2

b. 10 L NH3, 25 L N2 and 15 L H2

c. 20 L NH3, 10 L N2 and 30 L H2

d. 20 L NH3, 25 L N2 and 15 L H2

10. For the reaction A + 2B ->C, 5 moles of A and 8 moles of B will produce

a. 5 moles of C

b. 4 moles of C

c. 8 moles of C (4) 13 moles of C

d. The number of gram atoms of oxygen in 0.16 mol

11. A room has dimension 5m × 3m × 4m. A mosquito files from one corner of the room to its diagonally opposite corner, then magnitude of displacement of mosquito is

a. 5 m

b. 5 2 m

c. 4 m

d. 3 m

12. If the resultant of the two vectors having magnitude of 7 and 4 is 11, the dot product of the two vectors could be

a. 28

b. 3

c. Zero

d. 7/4

13. A force vector F = 2ˆI + 3ˆj N acts at a point P (4m, 2m) in xy plane then magnitude moment of force about origin of co-odinate system is

a. 14 Nm

b. 8 Nm

c. 12 Nm

d. Zero

14. Maximum and minimum magnitudes of the resultant of two vectors of magnitudes P and Q are in the ratio 3 : 1. Which of the following relations is true

a. P = 2Q

b. P = Q

c. PQ = 1

d. None of these

15. Which pair of the following forces will never give resultant force of 2N

a. 2 N and 2 N

b. 1 N and 1 N

c. 1 N and 3 N

d. 1 N and 4 N

16. The equivalent weight of KIO3 in the reaction,

2Cr(OH)3 + (OH)– + KIO3 à 2CrO42– + 5H2O + KI is :

a. Molecular weight

b. (Molecularweight)/3

c. (Molecularweight)/6

d. (Molecularweight)/2

17. 1g of a metal required 50 mL of 0.5 N HCl to dissolve it.The equivalent mass of the metal is :

a. 25

b. 50

c. 20

d. 40

18. When KMnO4 is reduced with oxalic acid in acidic medium, the oxidation number of Mn changes from :

a. 7 to 4

b. 6 to 4

c. 7 to 2

d. 4 to 2

19. In nitric oxide (NO), the oxidation state of nitrogen is:

a. –2

b. +1

c. –1

d. +2
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