HSSC CLERK EXAM (27.11.2016) (Shift-l)

41. A vender bought toffees at 6 for a rupee. How many for a rupee must he sell to get 20% profit.

(1) 3
(2) 4
(3) 5
(4) 6

Correct Answer: (3) 5

Solution:

42. The average income of a group of 9 workers is `137.30 and that of another group of 7 workers is `95.06. The average income of all the persons.

(1)、118.82
(2)、116.18
(3)、125.18
(4)、128.15

Correct Answer: (1)、118.82

Solution:

43. The difference between a two digit number obtained by interchanging the position of its digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1:27

(1) 4
(2) 8
(3) 16
(4) None of these

Correct Answer: (2) 8

Solution:First digit x = 2m

Second digit y = 1m

number = 10x + y

As per question

(10x + y) - (10y + x) = 36

9x - 9y = 36

x - y = 4

2m - m = 4 Putting the value of x and y

m = 4

x = 2m = 2 x 4 = 8

y = 1ne = 1 x4 = = 4

Required difference = Addition of digits difference of digits.

= (x + y) - (x - y)

= y = 2 * 4 = 8

44. If 3(x) = 27 and 3(x + y) = 243 then x is equal to

(1) 0
(2) 2
(3) 4
(4) 62

Correct Answer: (3) 4

Solution:

45. A water tank is two fifth full pipe A can fill the tank in 10 minutes and pipe B can empty in 6 minutes. If both the pipes are open how long will it take to empty or fill the tank completely?

(1) 6 minutes of empty
(2) 7 minutes to fill
(3) 6 minutes to fill
(4) 7 minutes to empty

Correct Answer: (1) 6 minutes of empty

Solution:

46. Mark the wrong combination.

(1) James Watt:Steam Engine
(2) A.G bail: Telephone
(3) J.L. Baird: Television
(4) J Parkins: Penicillin

Correct Answer: (4) J Parkins: Penicillin

Solution:Penicillin was envented by Alexender flaming in 1928, This is a group of antibiotics which is originated from penicillin fungi.

47. When iron and wood are exposed to sunlight the iron rod becomes hot Quickly because:

(1) Greater thermal conduc-tivity of. Iron.
(2) Lower thermal conductivi-ty of Iron
(3) More density of Iron
(4) Less density of Iron

Correct Answer: (1) Greater thermal conduc-tivity of. Iron.

Solution:When iron & wood are exposed to sunlight, the iron-rod becomes hot quickly due to greater thermal conductivity of iron.

48. Permanent hardness of water is due to the presences of

(1) Calcium biacarbonate
(2) Magnasium biacarbonates
(3) Calcium Sulphate
(4) Sodium Bicarbonate

Correct Answer: (3) Calcium Sulphate

Solution:The hardness of water is due to presence of calcium Sulphate (CaSO4). This hardness can not be removed by boiling the water.

49. Which one of the following organs affected by leukemia.

(1) Blood
(2) Lungs
(3) Eyes
(4) None of these

Correct Answer: (1) Blood

Solution:Blood is affected by the leu-kemia. In this disease num-bers of WBC increases rapidly and production of RBC is disturbed by it.

50. The largest part of the human brain is the

(1) Medulla Oblangta
(2) Crebellum
(3) Cerebrum
(4) Mid-brain

Correct Answer: (3) Cerebrum

Solution:The largest part of human Brain is cerebrum. It is also known as forebrain. It is 2/3 of the mass of brain. It is divided into two parts.

HSSC CLERK EXAM (27.11.2016) (Shift-l)

41. A vender bought toffees at 6 for a rupee. How many for a rupee must he sell to get 20% profit.

42. The average income of a group of 9 workers is `137.30 and that of another group of 7 workers is `95.06. The average income of all the persons.

43. The difference between a two digit number obtained by interchanging the position of its digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1:27

44. If 3(x) = 27 and 3(x + y) = 243 then x is equal to

45. A water tank is two fifth full pipe A can fill the tank in 10 minutes and pipe B can empty in 6 minutes. If both the pipes are open how long will it take to empty or fill the tank completely?

46. Mark the wrong combination.

47. When iron and wood are exposed to sunlight the iron rod becomes hot Quickly because:

48. Permanent hardness of water is due to the presences of

49. Which one of the following organs affected by leukemia.

50. The largest part of the human brain is the

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