A. Biosphere
B. Ecosystem
C. Both a & b
D. Hydrosphere
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Related Mcqs:
- Which of the following air pollutants is more dangerous for ozone layer ?
A. CFC
B. CO2
C. CO
D. Oxides of nitrogen - Greater shielding effect corresponds to ionization energy value___________________?
A. Greater
B. Lesser
C. Remain same
D. No effect - Shielding effect across the period ________________?
A. Increases
B. Decreases
C. Constant
D. None - Shielding effect across the period_________________?
A. Increases
B. Decreases
C. Can not be predicted
D. Remains constant - Which of the following shows inert pair effect ?
A. boron
B. carbon
C. silicon
D. tin - Which of the following orbitals has maximum penetration effect?
A. S
B. P
C. d
D. fSubmitted by: Muhammad Ali Kunbhar
- The shielding Effect across the period __________?
A. Increases
B. Decreases
C. Remains Same
D. None of themSubmitted by: Aamir khan Hullio
- Electromeric effect is ____________?
A. Permanent effect
B. Operate due to electronegativity difference
C. temporary effect
D. None of the aboveSubmitted by: Aneela shabbir
- Residence time of methane in the atmosphere is___________________?
A. 3 – 7 days
B. 2 -3 days
C. 3 – 7 years
D. 2 – 3 years - The main product of bacterial action is_________________?
A. Nox
B. NO2
C. N2O3
D. NO
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