Exercise 16

Question 6 :

To produce sound it is necessary that


A). the source should execute longitudinal vibrations
B). the source should execute transverse vibrations
C). the source may execute any type of vibrations
D). the vibrations of source are not necessary
Answer : Option C

Question 7 :

The UN library is known by the name of


A). Nation's library
B). U Thant library
C). Hammarskjoeld library
D). Trygve Lie library
Answer : Option C

Question 8 :

The theory of inheritance of acquired character was propounded by


A). Charles Darwin
B). Gregor Mendel
C). J.B. Lamarck
D). Weismann
Answer : Option C

Question 9 :

Water is a good solvent of ionic salts because


A). it has a high boiling point
B). it has a high dipole moment
C). it has a high specific heat
D). it has no colour
Answer : Option B

Question 10 :

Vijayalakshmi Pandit was


A). the first women minister of an Indian state (UP)
B). the first women to become president of the UN General Assembly
C). the first Indian women Ambassador to Moscow
D). All of the above
Answer : Option D