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MPSC Rajyaseva 2021 GS Paper 1 — Question 51

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Atomic structureSubatomic particles

खालील विधानें पहा : / Consider the following statements :

(a)अणू हा विद्युतभार दृष्ट्या उदासीन असतो. / An atom is electrically neutral.

(b)केंद्राभोवती फिरणाऱ्या सर्व इलेक्ट्रॉन्सचा ऋण विद्युतभार व केंद्रानावरील ऋण भार समान असतो. / The negative charge on nucleus is equal to the total negative charge of all the orbiting electrons.

1)दोनही चूक / Both are incorrect
2)दोनही बरोबर / Both are correct
3)(a) बरोबर, (b) चूक / (a) correct, (b) incorrect✓ Correct
4)(a) चूक, (b) बरोबर / (a) incorrect, (b) correct

An atom is electrically neutral because the positive charge on its nucleus equals the total negative charge of all orbiting electrons, making statement (a) correct and statement (b) incorrect since the nuclear charge is positive, not negative.

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