CAPF (AC) 2017 (Paper-1) (Question 101-125)

Total Questions: 25

11. During the given years, what is the average investment per year for the services sector (in Rupee's Hundred Crore)?

Investment in various industries/sectors across five years (in Rupee Hundred Crore)

Type of industry/sector	2005-06	2006-07	2007-08	2008-09	2009-10
Manufacturing	740	800	470	440	810
Electrical	500	520	600	650	800
Services	420	480	500	600	750
Mining	440	500	550	600	660
Others	800	900	980	1110	1080

(a) 490
(b) 550
(c) 580
(d) 670

Correct Answer: (b) 550

Solution:Investment in service sector = 420, 480, 500, 600, 750

Average investment per year

= (420 + 480 + 500 + 600 + 750)/5

= 2750/5 = 550

12. During which one of the following years, was the total investment maximum?

Investment in various industries/sectors across five years (in Rupee Hundred Crore)

Type of industry/sector	2005-06	2006-07	2007-08	2008-09	2009-10
Manufacturing	740	800	470	440	810
Electrical	500	520	600	650	800
Services	420	480	500	600	750
Mining	440	500	550	600	660
Others	800	900	980	1110	1080

(a) 2006-07
(b) 2007-08
(c) 2008-09
(d) 2009-10

Correct Answer: (d) 2009-10

Solution:Total investment from (2005-06)

= 740 + 500 + 420 + 440 + 800 = 2900

Total investment from (2006-07)

= 800 + 520 + 480 + 500 + 900 = 3200

Total investment from (2007-08)

= 470 + 600 + 500 + 550 + 980 = 3100

Total investment from (2008-09)

= 440 + 650 + 600 + 600 + 1110 = 3400

Total investment from (2009-10)

= 810 + 800 + 750 + 660 + 1080 = 4100

∴ During 2009-10 the total investment was maximum.

13. Which one of the following is a major effect of long term consumption of drinking water containing little (less than 0.5 ppm) or no fluoride?

(a) Cavity of tooth
(b) Erosion of nail
(c) Deformation of bone
(d) Mottling of tooth

Correct Answer: (a) Cavity of tooth

Solution:The permanently damaged areas in the hard surface of your teeth that develop into tiny openings or holes are called cavities. A high amount of ingestion of fluoride during enamel development can lead to enamel fluorosis. It is a crippling disease that resulted from the deposition of fluorides in the hard and soft tissues of the body. 1.4,g/litre of fluoride in water is the prescribed amount by the WHO. Therefore, the correct option is (a).

14. Carborundum is used as an abrasive, because it

(a) has high thermal conductivity
(b) has low coefficient of expansion
(c) has high chemical stability
(d) is extremely hard

Correct Answer: (d) is extremely hard

Solution:Carborundum (SiC) is used as abrasive since it is very hard and less in cost. It has a structure similar to diamond, but that is not the reason why it is used as an abrasive. It is produced by the carbothermal reduction of silica to form an ultra-hard covalently bonded material. It is used in car brakes and clutches, and plates in bulletproof vests. Therefore, the correct option is (d).

15. Which one of the following is NOT decomposed by bacterial action?

(a) Vegetable remains
(b) Plastic materials
(c) Animal carcasses
(d) Wastes of flowers

Correct Answer: (b) Plastic materials

Solution:Plastic materials cannot be decomposed by bacterial action. Microorganisms can only break down organic molecules or compounds. The process of decomposition process that takes place without the help of oxygen is known as anaerobic decomposition. Decomposer microorganisms feed on the organic thing and break it down into its simplest forms. Some of the common decomposers are bacteria, fungi, some insects and snails. The bacteria caused the biodegradation ranging from 2.19 to 20.54% for polythene and from 0.56 to 8.16% for plastics. Therefore, the correct option is (b).

16. Two positions of a dice with 1 to 6 dots on its side are shown below:

If the dice is resting on the side with three dots, what will be the number of dots on the side at the top ?

(a) 1
(b) 1 or 5
(c) 5
(d) 2 or 5

Correct Answer: (b) 1 or 5

Solution:In a dice, opposite faces do not appear at same time.

∴ dots 2, 4 and 6 are not on the side at the top.

∴ 1 or 5 number of dots on the side at the top.

17. Consider the following figure :

What is the number of rectangles which are not squares in the above figure? (Given that ABCD is a square and E, F, G, H are mid-points of its sides)

(a) 14
(b) 16
(c) 20
(d) 21

Correct Answer: (b) 16

Solution:

Hence, 16 is the correct answer.

18. Consider the following number :

n = [(6374)¹⁷⁹³ × (625)³¹⁷ × (313)⁴⁹]

Which one of the following is the digit at the unit place of n?

(a) 0
(b) 1
(c) 2
(d) 5

Correct Answer: (a) 0

Solution:n = [(6374)¹⁷⁹³ × (625)³¹⁷ × (313)⁴⁹]

We consider the digit at unit place in all the numbers.

The unit digit in (6374)¹⁷⁹³ = Unit digit in (4)¹⁷⁹³

= [(4²)⁸⁹⁶ × 4] = 6 × 4 = 4

The unit digit is (625)³¹⁷ = Unit digit in 5³¹⁷ = 5

The unit digit in (313)⁴⁹ = Unit digit in 3⁴⁹ = 3

Required digit = Unit digit in (4 × 5 × 3) = 0

19. Match List-I with List-II and select the correct answer using the code given below the Lists:

Code:	A	B	C	D
(a)	2	1	3	4
(b)	2	3	1	4
(c)	4	1	3	2
(d)	4	3	1	2

Correct Answer: (a)

Solution:Crobett is Uttarakhand Neora Valley National Park is a national park in Kalimpong district, West Bengal Betla National Park is a national park located on the Chota Nagpur Plateau in the Latehar and Palamu district of Jharkhand.

Kanha National Park located in the madla/ balaghat districts of Madhya Pradesh

20. Match List-I with List-II and select the correct answer using the code given below the Lists:

List-I (Bird Sanctuary)	List-II (State)
A. Sultanpur	1. West Bengal
B. Kulik	2. Haryana
C. Nawabganj	3. Uttar Pradesh
D. Attiveri	4. Karnataka

Code:	A	B	C	D
(a)	2	1	3	4
(b)	2	3	1	4
(c)	4	3	1	2
(d)	4	1	3	2

Correct Answer: (d)

Solution:Sultanpur National Park & Bird Sanctuary is located in Gurgaon district of Haryana.

Kulik bird sanctuary is in Raiganj in Uttar Dinajpur district in the Indian state of West Bengal.

nawabganj bird sanctuary is in Unnao district on the Kanpur-Lucknow highway in Uttar Pradesh. Attiveri bird sanctuary is in Mundgod taluk of Uttara Kannada district in Karnataka.

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