1. From which part of the plant is turmeric obtained?
Stem
2. In order of their distances from the Sun, which planet lies between Mars and Uranus?
Jupiter and Saturn
3. Which is used as a coolant in nuclear reactors?
Liquid sodium
4. Meghnad Saha is known for his contribution in which field?
Physics
5. Which part of cinchona plant yields quinine?
Bark
6. Liquefied Petroleum Gas consists of mainly which gases?
Methane, butane and propane
7. Which cytoplasm organelles are treated as prokaryotic cells within the eukaryotic cells?
Glyoxysomes
8. When milk is churned, how does the cream separate from it?
Due to the centrifugal force
9. When did man first land on moon?
1969
10. Which is the secondary source of light in a fluorescent lamp?
Mercury vapour
11. Archaeopteryx had which reptilian characters?
Clawed wings, teeth on jaw, tail
12. Which elements are obtained from sea weeds?
Iodine
13. By using which technique, is DNA fingerprint done?
Southern Blotting
14. Which Bacteria convert atmospheric nitrogen into nitrogenous compound?
Nitrogen fixing bacteria
15. Sound travels faster in which thing?
Iron than in air
16. Which type of microorganism is most widely used in industries?
Bacteria, microalgae and fungi.
17. In fireworks, how is the green flame produced?
Because of barium
18. Water will be absorbed by root hairs, then how is when the external medium?
Hypotonic
19. Who does a liquid drop tend to assume a spherical shape?
Surface tension
20. What is an instrument for measuring the rate of transpiration?
Potometer
21. Which reflects back more sunlight as compared to other three?
Land covered with fresh snow
22. Which substance does not have a melting point?
Glass
23. For which snake is the diet mainly composed of their snakes?
King Cobra
24. What minimum number of non-zero non-collinear vectors is required to produce a zero vector?
3
25. What structure is common to both earthworm and cockroach?
Ventral nerve cord
26. By which a mixture of sand and naphthalene can be separated?
Sublimation
27. Which part of human brain is the regulating centre for swallowing and vomiting?
Medulla oblongata
28. By which Radio waves of constant amplitude can be generated?
Oscillator
29. Which is used to know the development of foetus in uterus?
Ultrasound
30. Which oil is used in the floatation method for the purification of ores?
Pine oil