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
18%
B) Four times of the initial value
36%
C) Two times of the initial value
18%
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
3%
D) may increase or decrease
6. When light travels from one medium to other which property remains constant ?
Anonymous Quiz
39%
A) Frequency
21%
B) Wavelength
32%
C) Velocity
7%
D) None of these
7. Which of the following is not an electromagnetic wave ?
Anonymous Quiz
55%
A) Beta rays
7%
B) Gamma rays
10%
C) X rays
28%
D) light rays
9. metal ions that form soluble carbonates in presence of NH4Cl
Anonymous Quiz
4%
A) Ba
68%
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 ?
Anonymous Quiz
17%
A) lyman series
71%
B) Balmer series
4%
C) Bracket series
8%
D) Pfund series
3. Which of the following is a green solvent used for bleaching clothes ?
Anonymous Quiz
20%
A) Hydrogen peroxide
60%
B) Benzene
10%
C) Water
10%
D) Liquified carbon dioxide
4. In a code language, SmART is written as mACKO. How will CROWN be written in the same language ?
Anonymous Quiz
0%
A) FKETB
57%
B) GKETB
29%
C) GKESB
14%
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
13%
A) 55
25%
B) 45
63%
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
50%
B) 4
0%
C) 3
50%
D) 2
7. The total surface area of a hemisphere is 108 πcm2. Then what is its volume ?
Anonymous Quiz
0%
A) 288 πcm2
83%
B) 144 πcm2
17%
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
17%
A) ± 6
50%
B) ± 3
33%
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
44%
B) 120
22%
C) 124
33%
D) 126
10. maximum value of – x^2 + 6x – 8 is
Anonymous Quiz
9%
A) 3
55%
B) 2
27%
C) 1
9%
D) 0
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