A. Oxygen and hydrogen
B. Oxygen, hydrogen, acetylene and nitrogen
C. Oxygen, acetylene and argone
D. Oxygen and acetylene
A. Oxygen and hydrogen
B. Oxygen, hydrogen, acetylene and nitrogen
C. Oxygen, acetylene and argone
D. Oxygen and acetylene
A. both
B. every
C. each
D. any
A. Markhor
B. Chakor
C. Parrot
D. Pigeon
A. Sialkot-Ferozpur
B. Ferozpur-Kasur
C. Amritsar-Lahore
D. None of these
A. Scattering
B. Total Internal Reflection
C. Interference
D. Principle of refraction
A. Human error
B. Technical error
C. Instrumental error
D. None of these
A. Roger Bacon
B. Issac Newton
C. Johannes Kepler
D. Galileo
A. 1948
B. 1967
C. 1971
D. 1988
A. 1981
B. 1982
C. 1983
D. 1984
A. Chenab & Ravi
B. Chenab & Jhelum
C. Sindh & Ravi
D. Sindh & Chenab
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