HSSC CLERK EXAM,13.11.2016 (Shift-I)

11. Alfred buys an old scooter for Rs. 4700 and spends Rs. 800 on its repairs. If he sells the scooter for Rs. 5800, his gain percent is.

(1) 44% 7
(2) 55% 11
(3) 10%
(4) 12%

Correct Answer: (2) 55% 11

Solution:CP = ₹ 4700

Reparing cost = ₹ 800

∴ total CP = ₹ 5500

(4700 + 800)

SP = ₹ 5800

∴ Profit %

= profit/CO * 100 (Formula)

= 5800 - 5500/5500*100

= 5 5/11 %

12. The average of 11 results is 50. If the average of first six results is 49 and that of last six is 52. Find the sixth result?

(1) 56
(2) 46
(3) 52
(4) 59

Correct Answer: (1) 56

Solution:Given,

Average of 11 results = 50

Average of first 6 results = 49

Average of last 6 results = 52

6th result = ?

Formula,

Average = Total of results/no. of results

x/11 = 50, if x = 550

x/6 = 49, if x = 294

x/6 = 52, if x = 312

∴ 6th results = (294 = 312)

- 550 = 56

13. Find the HCF of 2² x 3² x 7² and 2 x 3⁴ x 7

(1) 128
(2) 126
(3) 14620
(4) 434

Correct Answer: (2) 126

Solution:

14. (a/b)^(x-2) = (b/a)^(x-1), the x equal to

(1) 1.5
(2) 4.5
(3) 7.5
(4) 9.5

Correct Answer: (1) 1.5

Solution:

15. A dog takes 3 leaps for every 5 leaps of deer. If one leap of the dog is equal to 3 leaps of the deer, the ratio of the speed of the dog to that of the deer is.

(1) 4:5
(2) 9:5
(3) 8:5
(4) 9:2

Correct Answer: (2) 9:5

Solution:let distance covered by deer in each leap = x

Distance covered by dog = 3x tTIME

Diatance covered by deer = 5 jump = 5*x = 5x

Distance covered by dog jump = 3 *3x= 9x

∴ Dog Hare

Distance 9 x 5 x

Speed 9 : 5

16. Which is the largest living bird on Earth?

(1) Emu
(2) Ostrich
(3) Albatrass
(4) Siberian crane

Correct Answer: (2) Ostrich

Solution:The ratio of distance and speed is same Largest living bird on the earth is Ostrich. It is found in mainly in Africa continent. Ostrich is vegetarian & run about 70 km/hrs.

17. Which part modified as the tusk of elephant?

(1) Canine
(2) Premolar
(3) Second incisor
(4) Molar

Correct Answer: (3) Second incisor

Solution:Second Incisor in modified as the tusk of elephant. It has medicinal value.

18. The phenomenon of light as. sociated with the appearance of blue of the sky is

(1) Interference
(2) Reflection
(3) Refraction
(4) Scattering

Correct Answer: (4) Scattering

Solution:Scattering occurs when light passes through imperfect medium & are deflected from a straight path & scatters in many direction

19. The element which is used for vulcanizing rubber.

(1) Sulphur
(2) Bromine
(3) Sillicon
(4) Phosphorus

Correct Answer: (1) Sulphur

Solution:Sulphur is used for vulcanizing rubber. Sulpher has 16 atomic number. In this process raw rubber is heated with sulpher about 3 to 4 hours on 140°C temperature,

20. Sound waves with frequency greater than 20000 is

(1) Sonic
(2) Ultrasonic
(3) Infrasonic
(4) Subsonic

Correct Answer: (2) Ultrasonic

Solution:Ultrasonic are the waves with frequency greater then 2000 hz. We can not hear Ultrasonic waves. But some animals like dog, cat Bat ete can feel this waves.