Q. The enzyme that splits polysaccharides in the month is
1) Zymase
2) Invertase
3) Sucrose
4) Amylase
Q. The entropy of the universe
1) tends towards maximum
2) tends towards zero
3) tends towards minimum
4) remains unchanged
Q. The energy of the electron is taken as zero when it is
1) in its ground state
2) in the k-shell
3) in the orbit
4) far from the nucleus
Q. The element first detected spectroscopically in the Sun's atmosphere is
1) O2
2) Ne
3) H2
4) He
Q. The electron affinity for the inert gases is
1) Zero
2) High
3) Negative
4) Positive
Q. The ejection of electrons when a metal surface is irradiated is called
1) Black body radiation
2) Photoelectric effect
3) Zeeman effect
4) Atomic spectrum
Q. The difference between isotopes of an element is due to the presence of a different number of
1) Protons
2) Neutrons
3) Electrons
4) Photons
Q. The development of the ultra microscope makes use of the
1) Edison effect
2) Tyndall effect
3) Brownian motion
4) Zeeman effect
Q. The cyclotron is a device for
1) purifying metals
2) accelerating particles
3) separating oil from water
4) producing protons
Q. The correct order of reactivity of the following alcohols is in the order
1) primary > secondary > tertiary
2) primary > tertiary > secondary
3) secondary > primary >tertiary
4) tertiary > secondary > primary
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