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Q.

Statement-I: Be and Mg do not respond to flame test while Ca, Sr and Ba give characteristic colours golden red, crimson and apple green respectively.
Statement-II: In Bunsen burner flame, electrons of valence shell get excited by absorption of energy. When electrons return to their original state the radiations appear in visible spectrum and colour appears.

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a

Both statement-I and statement-II are correct

b

Both statement-I and statement-II are incorrect

c

Statement-I is incorrect and statement-II is correct

d

Statement-I is correct and statement-II is incorrect

answer is A.

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Detailed Solution

In $Be and Mg$ electrons are strongly bounded so they can't be excited by flame .so they can't impart to flame

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Statement-I: Be and Mg do not respond to flame test while Ca, Sr and Ba give characteristic colours golden red, crimson and apple green respectively.Statement-II: In Bunsen burner flame, electrons of valence shell get excited by absorption of energy. When electrons return to their original state the radiations appear in visible spectrum and colour appears.