41- Increased concentration of CO2 in atmosphere is responsible for
(A) Acid rain
(B) Green house effect
(C) Lack of photosynthesis
(D) Death of aquatic life
42- Bohr model can explain
(A) The spectrum of hydrogen atom only
(B) Spectrum of an atom or iron containing one electron only
(C) The spectrum of hydrogen molecule
(D) The solar spectrum
43- The temperature of the system decreases in an
(A) Adiabatic expansion
(B) Adiabatic compression
(C) Isothermal compression
(D) Isothermal expansion
44- Solar eclipse will take place when
(A) The sun is between the moon and the earth
(B) The earth is between the moon and the sun
(C) The moon is between the sun and the earth
(D) The moon does not lie on the line joining the sun and the earth.
45- When an electrolyte is added to a colloidal solution it
(A) Gets coagulated
(B) Gets ionized
(C) Gets charged into a sol
(D) Remains unchanged
46- Which pat of new Encyclopedia Britannica is useful for ready references?
47- Asian Games 2014 will be held in ………..?
(A) South Korea
(B) North Korea
48- The movement of molecules of a dispersed phase in zig-zag manner is termed as
(A) Tyndall effect
(D) Brownian motion
49- India, with which country released first encyclopedia on their age old cultural contacts, tracing back their history to over 2,000 years?
(A) Sri Lanka
(C) South Africa
50- The SPOT -7 Satellite which was recently launched on board India’s PSLV C-23 flight recently belongs to……?