Q1. What is/are the source(s) of Direct Current(DC)?
(d) Both (a) & (b)
Q2. When we consume the goat or sheep beef then we are—
(a) primary consumer
(b) secondary consumer
(c) tertiary consumer
(d) None of the above
Q3. Lipids are insoluble in which of the following?
Q4. Domestic electrical wiring is basically a—
(a) series connection
(b) parallel connection
(c) combination of series and parallel connections
(d) series connection within each room and parallel connection elsewhere
Q5. Chikunguniya fever(CF) is transmitted by which of the following?
(a) Aedes mosquitoes
(b) Anopheles mosquitoes
(c) Lymphatic filariasis
(d) none of the above
Q6. Why does a ball bounce after falling?
(b) Newton’s first law of motion
(c) Newton’s third law of motion
(d) Both (a) & (c)
Q7. Why it is recommended to add salt to water while boiling pulses(dal)?
(a) By addition of salt, the boiling point of water increases
(b) By addition of salt, the boiling point of water decreases
(c) Does not make any change to the boiling point of water
(d) none of the above
Q8. What is the normal temperature of human body on the Kelvin scale?
Q9. The phenomenon of genetic mutation cannot occur in—
Q10. Which one among the following is not a living fossil?
(a) Elephant Shrew
Q11. What is MRI?
(a) Magnetic Record of Intestines
(b) Magnetic Recording of Investigations
(c) Magnetic Resonance Imaging
(d) Magnetic Resonance in Intestines
Q12. The branch of botany under which fungi is studied:
Q13. Consider the following statements:
1. Maximum covalency of carbon is 4, whereas maximum covalency of silicon is 6.
2. The maximum covalency of an element is limited to 6.
Which of the statements given above is/are correct ?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Q14. Why the sprinkling of water slightly reduces the temperature of a closed room?
(a) temperature of water is less than that of the room
(b) specific heat of water is high
(c) water has large latent heat of vaporisation
(d) water is a bad conductor of heat
Q15. One feels heavier in a lift when the lift—
(a) is going down steadily
(b) just begins to go up
(c) is moving up steadily
(d) descends freely