Q1. Coffee is extracted from which of the following?
Q2. What is the minimum distance should be, to hear a clear echo?
(a) 165 feet
(b) 165 metre
(c) 16.5 feet
(d) 16.5 metre
Q3. What is Light year?
(a) Light emitted by the sun in one year
(b) Time taken by light to travel from sun to earth
(c) The distance travelled by light in free space in one year
(d) Time taken by earth to go once around the sun
Q4. Which one is the Tallest terrestrial tree on the Earth?
Q5. The spread in colours in a rainbow on sky is primarily due to
(a) refraction of sunlight
(b) reflection of sunlight
(c) dispersion of sunlight
(d) total internal reflection of sunlight
Q6. A man is sitting in a boat which is floating in pond. If the man drinks some water from the pond, the level of water in the pond will
(a) rise a little
(b) fall a little
(c) remain same
(d) None of these
Q7. Which of the following unicellular alga is used to supply and regulate the oxygen in space programmes?
Q8. Which one of the following mixtures is homogeneous?
(a) Starch and sugar
(b) Graphite and charcoal
(c) Methanol and water
(d) Calcium carbonate and calcium bicarbonate
Q9. Carborundum is a compound of which of the following?
Q10. A metal sheet with a circular hole is heated. The hole
(a) gets larger
(b) gets smaller
(c) remains of the same size
(d) gets deformed
Q11. pH of human body varies within the range of—
(a) 6.0 to 6.5
(b) 5.5 to 5.8
(c) 7.0 to 7.8
(d) 7.0 to 11.0
Q12. Which of the following device is used to measure the rate of stem growth?
Q13. Quinine is obtained from which part of the plant?
Q14. The hotness or pungency of chili pepper is due to which of the following?
Q15. Commonly used antiseptic ‘Dettol’ is a mixture of which of the following?
(a) o-chlorophenoxylenol + terepineol
(b) o-cresol + terepineol
(c) chloroxylenol + terepineol
(d) phenol + terepineol