MHT-CET

s Block Elements question bank (Chemistry)

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Q1.

Which of the following elements is the radioactive alkaline earth metal?

(A)
$\text{Cs}$
(B)
$\text{Rb}$
(C)
$\text{Fr}$
(D)
$\text{Ra}$
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Q2.

Identify the pair of basic oxides from the following.

(A)
$\text{CaO}$ and $\text{Na}_2\text{O}$
(B)
$\text{SO}_2$ and $\text{Cl}_2\text{O}$
(C)
$\text{BaO}$ and $\text{N}_2\text{O}_5$
(D)
$\text{CO}$ and $\text{N}_2\text{O}$
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