Chemistry important Questions Part - 2
Friday, 1 February 2019
Bark
2. Liquefied Petroleum Gas consists of mainly which gases?
Methane, butane and propane
3. Which is the secondary source of light in a fluorescent lamp?
Mercury vapour
4. Which elements is obtained from sea weeds?
Iodine
5. Which Bacteria convert atmospheric nitrogen into nitrogenous compound?
Nitrogen fixing bacteria
6. In fireworks, how is the green flame produced?
Because of barium
7. Water will be absorbed by root hairs, then how is when the external medium?
Hypotonic
8. Who does a liquid drop tend to assume a spherical shape?
Surface tension
9. Which substance does not have a melting point?
Glass
10. Which was the first metal used by man?
Copper
11. In which city of India, the diurnal range of temperature is maximum?
New Delhi
12. What is the Number of water molecules present in Mohr’s salt?
8
13. Why are Metals good conductor of heat than insulator?
They contain free electrons
14. A mixture of camphor and benzoic acid can be easily separated by which
method?
Chemical method
15. If a material, placed in a magnetic field is thrown out of it, then how is the material?
Diamagnetic
16. In organic compound, halogens are estimated by which method?
Carius method
17. To which are Phototrophic and Geotropic movements linked?
Auxin
18. A place having an average annual temperature of 27°C and an annual rainfall of over 200 cm.where is this?
Singapore
19. Which is the most unreactive gas?
Hydrogen
20. Which is the major oil producing area in U.S.A.?
Texas-Louisiana belt
21. Which country leads the world in the export of oil?
Saudi Arabia
22. With the rise of temperature, what happens in the speed of sound in a gas?
23. The isotopes of chlorine with mass number 35 and 37 exist in which ratio?
3:01
24. When the radius of the T.G. coil is decreased, what does happen in itssensitiveness?
Increases
25. The United Nations declared 2014 as which International Year?
Crystallography
26. Which colloids are solvent loving colloids?
Lyophilic
27. The resistance of material increases with temperature. What is this?
Metal
28. Which relates to the formation of the Himalayas?
Folding of the geosyncline
29. Which material is very hard and very ductile?
Nichrome
30. Which was the scientist who was responsible for the rejection of vital force theory?
Lavoisier
