SINDH PUBLIC SERVICE COMMISSION, HYDERABAD.
Combined Competitive Examination, 2020
General Science & Ability.
Saturday the 14th November, 2020.
Time: 02:00 pm to 05: 00 pm Maximum marks. 100
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Note: Attempt any Five questions. Selecting Three questions from Section-I and Two questions from Section-II.
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Question No. Marks.
SECTION-I
01 (A) Define major sources of Water Pollution. How do our domestic and industrial activities pollute water? Elaborate with examples three main Industrial water pollutants. 10
(B) What do you understand by Acid Rain. Is there any relation of following with acid rain? 10
(i) Global Warming (ii) Ozone Depletion (iii) Green House Effect
Explain with examples.
02 (A) Define Renewable and Non-Renewable Energy Sources. Provide example of each. 05
(B) Among all Renewable Energy Sources highlight, which one is more efficient. Please rank them as per their efficiencies. 05
(C) What is Wind Corridor? What are the potential areas in Pakistan where these Wind Corridor are located? 05
(D) We have seen Solar Panels everywhere. Could you name the technology behind these panels as they are known commonly as PV panels? 05
03 (A) Define Vaccine and Antibiotics. How they differ in their functioning. 05
(B) What is the harmful impact of fertilizer on soil? How they harm human life. 05
(C) Pesticides are essential for Agricultural Growth. Do you agree or disagree with this statement? 05
(D) Biodegradable plastic is the solution of many Environmental problems. Please explain. 05
04 (A) Write short note on the following: 05
(i) Proteins (ii) Lipids (iii) Carbohydrates (iv) Enzymes.
(B) Define Cell Structure. What are Three functions of cell. 05
(C) Compare and contrast four similarities and differences in animal and plant cell. 05
(D) What is Dengue. Discuss its causes and prevention techniques. 05
05 (A) How a diet is termed as „Balanced Diet‟. Discuss different food group consisting in Balanced Diet. 05
(B) What is Adulteration. Give examples from daily habits of eating. 05
(C) Why preservatives are added in food items. Give reasons. 05
(D) How Antioxidants in food help to maintain our health. Explain with examples. 05
SECTION-II
06 (A) Write Short notes on the following: 10
(i) Ratios (ii) Percentage (iii) Types of Triangles (iv) Average
(B) A shopkeeper bought 600 oranges and 400 bananas. He found 15% of oranges and 8% of bananas as rotten. Find the percentage of fruits in good condition. 10
07 (A) What number comes next? 10
9, 15, 13, 19, 17, 23…..
(B) A Bat and Ball cost Rs. 1.10 in total. The bat cost one Rupee more than the ball. How much does the Ball Cost? 10
08 (A) Excluding Stoppages, the speed of a bus is 54 kmph and including stoppages, It is 45 kmph. For how many minutes does the bus stop per hour? 05
(i) 9 (B) 10 (C) 12 (D) 20
(B) Robert is traveling on his cycle and has calculated to reach point A at 2 P.M. If he travels at 10 kmph, he will reach there at 12 Noon if he travels at 15 kmph. 05
At what speed must be travel to reach A at 1 P.M.?
(i) 8 kmph (ii) 11 kmph (iii) 12 kmph (iv) 14 kmph.
(C) Two tailors X and Y are paid a total of Rs. 550/- per week by their employer. 05
If X is paid 120 percent of the sum paid to Y, how much is Y paid per week?
(i) 200/- (ii) 250/- (iii) 300/- (iv) None of these
(D) 0.002 x 0.5 = ? 05
(i) 0.0001 (ii) 0.001 (iii) 0.01 (iv) 0.1
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