MPSC Rajyaseva 2019 GS Paper 1 — Question 19
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खालील दिलेल्या विधानापैकी कोणती विधाने बरोबर आहेत ? Which of the following statements are correct?
(a)HF आणि H₂O ही ध्रुवीय संयुगे आहेत. / HF and H₂O are polar molecules.
(b)CH₄ आणि CO₂ ही ध्रुवीय संयुगे नाहीत. / CH₄ and CO₂ are non-polar molecules.
(c)CO₂ आणि SO₂ ही ध्रुवीय संयुगे नाहीत. / CO₂ and SO₂ are non-polar molecules.
1)अ आणि ब / a and b✓ Correct
2)ब आणि क / b and c
3)अ आणि क / a and c
4)अ, ब आणि क / a, b and c
HF and H2O are polar molecules due to significant electronegativity difference and bent/asymmetrical geometry. CH4 and CO2 are non-polar due to symmetrical geometry cancelling dipoles.
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