Free gk questions Online Test - MeritNotes

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1. The spectrum that contains unbroken luminous bands of all wavelengths containing all colours from violet to red is called ______ sectrum.

(a) Line absorption
(b) Band
(c) Line
(d) Continuous

2. In a simple radio receiver, the function of PN junction diode in a detector is

(a) To convert electromagnetic energy into sound energy
(b) To extract the audio signal from the radiowave
(c) To amplify the selected radiowave
(d) To receive the audio signal of desired frequency

3. How many colours the sunlight spectrum has?

(a)
3
(b)
4
(c)
7
(d)
9

4. Clotting of blood vessels is called

(a)
Agglutinisation
(b)
Thrombosis
(c)
Rheumatism
(d)
Fibrosis

5. In an atomic explosion, enormous energy is released which is due to the

(a)
Conversion of chemical energy into heat energy
(b)
Conversion of neutrons into process
(c)
Conversion of mechanical energy into nuclear energy
(d)
Conversion of mass into energy

6. The type of modulation that facilities highest transmission speeds of a given bandwidth is

(a) Amplitude modulation
(b) Phase modulation
(c) Frequency modulation
(d) Both a and b

7. There are three kinds of losses in transmission lines are these are

(a)
Capacitance loss, inductance loss and heat loss
(b)
Copper loss, heat loss and radiation loss
(c)
Copper loss, dielectric loss and radiation loss
(d)
None of these

8. In Raman effect, the frequency of anti-stokes lines is

(a) Zero
(b) Equal to incident frequency
(c) Lower than incident frequency
(d) Greater than incident frequency

9. One mole of hydrogen gas burns in excess of oxygen to give 290 KJ of heat. What is the amount of heat produced when 4g of hydrogen gas is burnt under the same conditions?

(a)
145 KJ
(b)
290 KJ
(c)
580 KJ
(d)
1160 KJ

10. In Raman effect, the frequency of stokes lines is

(a) Zero
(b) Equal to incident frequency
(c) Greater than incident frequency
(d) Lower than incident frequency

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