7000+ TNPSC General Science Previous Year Question Pdf - 2

Question: 6

The sky appears blue

(A) Due to scattering

(B) Due to reflection

(C) Due to refraction

(D) Due to dispersion

Question: 7

The normal temperature of the human body is

(A) 280 K

(B) 290 K

(C) 300 K

(D) 310 K

Question: 8

The pendulum watches become slowed down in summer because

(A) Pendulum becomes elongated and correspondingly time is elongated at per unit oscillation

(B) The weight of the pendulum is increased in the summer

(C) Of longer summer day

(D) Of appearance of friction in the coils

Question: 9

Which one of the following is the unit of activity of a radioactive source?

(A) Becquerel

(B) Tesla

(C) Siemens

(D) Lux

Question: 10

The temperature of the body of a healthy man is

(A) 37°F

(B) 37°C

(C) 98.4°C

(D) 98.4°K