In a sitar wire which one of the following types of vibration is produced?

A. Progressive longitudinal
B. Stationary longitudinal
C. Progressive transverse
D. Stationary transverse

Show Answer

22. Which gas in the atmosphere saves us from the ultra violet rays of the sun?

A. Nitrogen
B. Oxygen
C. Ozone
D. Carbon Monoxide

Show Answer

23. What is the study of plants called?

A. Physics
B. Chemistry
C. Zoology
D. Biology

Show Answer

24. The three methods of science are observation, experimentation and

A. Hypothesis
B. Measurement
C. Deduction
D. inference

Show Answer

25. The Central Arid Zone Research Institute (CAZRI) is located at

A. Jaipur
B. Jodhpur
C. Jaisalmer
D. Jallandhar

Show Answer

26. What is the more common name for a polymer of amino acids?

A. Protein
B. Carbohydrate
C. Enzyme
D. Sugar

Show Answer

27. Which rare element would you associate with Marie and Pierre Curie?

A. Uranium
B. Gold
C. Radium
D. Platinum

Show Answer

28. Which chemical element is represented by the symbol Zn?

A. Aluminum
B. Copper
C. Gold
D. Zinc

Show Answer

29. Who discovered Penicillin?

A. Robert Koch
B. Sir Alexander Fleming
C. Watson and Crick
D. Louis Pasteur

Show Answer

30. In which one among the following is the speed of sound maximum?

A. Alit at 0 degree
B. Alit at 100 degree
C. Water
D. Wood