CSS General Science and Ability MCQS Set 8

Directions: Study the following information to answer the given questions.

History

Accounting

Urdu

None of these

A train 100 metres long passes a bridge at the rate of 72 km/hr in 25 seconds. What is the length of the bridge ?

400 m

170 m

None of these

600 m

A boy earns Rs. 20.56 on Monday, Rs. 32.90 on Tuesday, Rs. 20.78 on Wednesday. He spends half of all that he earned during the three days. How much has he left ?

Rs. 36.15

Rs. 37.50

Rs. 37.15

Rs. 35.00

Five bells begin to toll together and toll at intervals of 36, 45, 72, 81 and 108 seconds. After what interval of time will they keep on tolling together ?

3200 seconds

3140 seconds

3080 seconds

3240 seconds

15 litres of mixture contains 20% alcohol and the rest water. If 3 litres of water be mixed in it, the percentage of alcohol in the new mixture will be

0.1666666667

0.185

0.15

0.17

The smallest number which when subtracted from the number 62512 makes it a perfect square is

12

22

32

2

In an examination, 1100 boys and 900 girls appeared. 50% of the boys and 40% of the girls passed the examination. The percentage of candidates failed is:

45.5

59.2

45

54.5

The burning of coal, oil, and other combustible energy sources produces carbon dioxide, a natural constituent of the atmosphere. Elevated levels of carbon dioxide are thought to be responsible for half the greenhouse effect. Enough carbon dioxide has been sent into the atmosphere already to cause a significant temperature increase. Growth in industrial production must be slowed, or production processes must be changed.

Industry is switching over to synthetic liquid fuel extracted form coal.

Most carbon dioxide is emitted by automobiles.

Many areas of the world are cold anyway, so a small rise in temperature would be welcome.

Carbon dioxide is bad for the health.

A shift to other energy sources would be too costly.

Number Series Test

1/100

43489

43490

13150

When (x³ – 2x² + px – q) is divided by x² – 2x – 3 the remainder is (x – 6). The values of p and q are:

p = -2, q = -6

p = 2, q = -6

p = -2, q = 6

p = 2, q = 6