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1
TG EAPCET 2024 (Online) 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
Identify the compound which gives $\mathrm{CO}_2$ more readily on heating?
A
$\mathrm{CaCO}_3$
B
$\mathrm{NaHCO}_3$
C
$\mathrm{Na}_2 \mathrm{CO}_3$
D
$\mathrm{Li}_2 \mathrm{CO}_3$
2
TG EAPCET 2024 (Online) 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
What is the correct stability order of $\mathrm{KO}_2, \mathrm{RbO}_2, \mathrm{CsO}_2$ ?
A
$\mathrm{KO}_2<\mathrm{CsO}_2<\mathrm{RbO}_2$
B
$\mathrm{CsO}_2<\mathrm{KO}_2<\mathrm{RbO}_2$
C
$\mathrm{CsO}_2<\mathrm{RbO}_2<\mathrm{KO}_2$
D
$\mathrm{KO}_2<\mathrm{RbO}_2<\mathrm{CsO}_2$
3
TG EAPCET 2024 (Online) 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Assertion (A) $\mathrm{MgO}, \mathrm{CaO}, \mathrm{SrO}$ and BaO are insoluble in water.

Reason ( R ) In aqueous medium the basic strength of $\mathrm{MgO}, \mathrm{CaO}, \mathrm{SrO}$ and BaO increases with increase in the atomic number of metal.

The correct option among the following is

A
Both $(A)$ and $(R)$ are correct and $(R)$ is the correct explanation of (A).
B
Both (A) and (R) are correct but ( R ) is not the correct explanation of (A).
C
(A) is correct but ( $R$ ) is not correct.
D
(A) is not correct but (R) is correct.
4
TS EAMCET 2023 (Online) 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the incorrect reaction from the following.

A

$2 \mathrm{NaNO}_3 \longrightarrow 2 \mathrm{NaNO}_2+\mathrm{O}_2$

B

$2 \mathrm{LiNO}_3 \longrightarrow 2 \mathrm{LiNO}_2+\mathrm{O}_2$

C

$2 \mathrm{~Pb}\left(\mathrm{NO}_3\right)_2 \longrightarrow 2 \mathrm{PbO}+4 \mathrm{NO}_2+\mathrm{O}_2$

D

$\mathrm{Mg}_2 \mathrm{C}_3+\mathrm{H}_2 \mathrm{O} \longrightarrow \mathrm{CH}_3 \mathrm{C} \equiv \mathrm{CH}+\mathrm{Mg}(\mathrm{OH})_2$

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