1
AP EAPCET 2021 - 19th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

When borax is dissolved in water, it gives an alkaline solution. The alkaline solution consists the following products

A
$$\mathrm{NaOH}$$ and $$\mathrm{BH}_3$$
B
$$\mathrm{NaOH}$$ and $$\mathrm{H}_3 \mathrm{BO}_3$$
C
$$\mathrm{NaHCO}_3$$ and $$\mathrm{H}_3 \mathrm{BO}_3$$
D
$$\mathrm{Na}_2 \mathrm{CO}_3$$ and $$\mathrm{H}_3 \mathrm{BO}_3$$
2
AP EAPCET 2021 - 19th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify (P) and (Q) in the following reaction.

AP EAPCET 2021 - 19th August Morning Shift Chemistry - p-Block Elements Question 9 English

A
$$P:\left(\mathrm{CH}_3\right)_3 \mathrm{SiCl}, \quad Q:\left(\mathrm{CH}_3\right)_3 \mathrm{SiOH}$$
B
$$P:\left(\mathrm{CH}_3\right)_2 \mathrm{SiCl}_2, Q:\left(\mathrm{CH}_3\right)_2 \mathrm{Si}(\mathrm{OH})_2$$
C
$$P:\left(\mathrm{CH}_3\right)_2 \mathrm{SiCl}_2, \quad Q:\left(\mathrm{CH}_3\right)_2 \mathrm{Si}(\mathrm{OH}) \mathrm{Cl}$$
D
$$P:\left(\mathrm{CH}_3\right)_2 \mathrm{SiCl}_2, Q:\left(\mathrm{CH}_3\right)_2 \mathrm{SiO}$$
3
AP EAPCET 2021 - 19th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

Green chemistry refers to reactions which

A
reduce the use and production of hazardous chemicals
B
study of the extremely slow reactions
C
are related to soil erosion
D
study of green leaves
4
AP EAPCET 2021 - 19th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

Assertion (A) Sodium acetate on Kolbe’s electrolysis gives ethane.

Reason (R) Methyl free radical is formed at cathode.

A
Both A and R are true and R is a correct explanation of A.
B
Both A and R are true but R is not a correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
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