KAS ZONE - For KAS & Kerala PSC Exam Preparation
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A collaborative learning platform for Kerala Administrative Services & Kerala PSC exams.

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3. If the kinetic energy of a moving body becomes four times of its initial value. The new linear momentum will be
Anonymous Quiz
29%
A) Eight times of the initial value
21%
B) Four times of the initial value
38%
C) Two times of the initial value
13%
D) Remains the same
4. The door of a running refrigerator is kept opened in a room. Temperature of the room
Anonymous Quiz
38%
A) decreases
21%
B) Increases
38%
C) Remains constant
4%
D) may increase or decrease
6. When light travels from one medium to other which property remains constant ?
Anonymous Quiz
33%
A) Frequency
21%
B) Wavelength
38%
C) Velocity
8%
D) None of these
7. Which of the following is not an electromagnetic wave ?
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52%
A) Beta rays
8%
B) Gamma rays
12%
C) X rays
28%
D) light rays
9. metal ions that form soluble carbonates in presence of NH4Cl
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4%
A) Ba
67%
B) Ca
29%
C) Mg
0%
D) Sr
10. Which of the following statements are correct regarding minamata disease ?
i. It is an infectious disease.
ii. It was caused by consumption of fish containing lead.
iii. It was caused by consumption of fish containing mercury.
iv. It was caused by consumption of fish containing cadmium.
v. It affects the central nervous system.
vi. It affects respiratory system.
1. Which of the hydrogen spectrum series is in the visible region ?
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24%
A) lyman series
65%
B) Balmer series
0%
C) Bracket series
12%
D) Pfund series
3. Which of the following is a green solvent used for bleaching clothes ?
Anonymous Quiz
25%
A) Hydrogen peroxide
50%
B) Benzene
13%
C) Water
13%
D) Liquified carbon dioxide
4. In a code language, SmART is written as mACKO. How will CROWN be written in the same language ?
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0%
A) FKETB
67%
B) GKETB
17%
C) GKESB
17%
D) None of These
5. Suppose a bus covers a distance at 40 kmp/h and an equal distance at 60 kmp/h. Then what is the average speed during the whole journey ?
Anonymous Quiz
14%
A) 55
14%
B) 45
71%
C) 48
0%
D) 50
6. In what time will Rs. 20,000 becomes Rs. 21,632 at 4% per annum interest compounded yearly ?
Anonymous Quiz
0%
A) 5
43%
B) 4
0%
C) 3
57%
D) 2
7. The total surface area of a hemisphere is 108 πcm2. Then what is its volume ?
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0%
A) 288 πcm2
80%
B) 144 πcm2
20%
C) 108 πcm2
0%
D) 72 πcm2
8. The equation x + kx + 9 = 0 has two equal roots, then the value of k is
Anonymous Quiz
20%
A) ± 6
40%
B) ± 3
40%
C) ± 0
0%
D) ± 9
9. In how many ways can we select 5 books out of 10, of which a particular book is not included ?
Anonymous Quiz
0%
A) 108
29%
B) 120
29%
C) 124
43%
D) 126
10. maximum value of – x^2 + 6x – 8 is
Anonymous Quiz
17%
A) 3
33%
B) 2
50%
C) 1
0%
D) 0