SATHEE: pBlock ElementsII 1 Question 42

pBlock ElementsII 1 Question 42

42. Which of the following is incorrect statement?

$(1978, 1 M)$

(a) $NO$ is heavier than $O_{2}$

(b) The formula of heavy water is $D_{2} O$

(d) ${NH}_{3}$ can be used as a refrigerant

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Answer:

Correct Answer: 42. (a)

Solution:

NO is lighter than $O_{2}$ .

$D_{2} O$ is commonly known as heavy water.

$N_{2}$ is lighter than $O_{2}$ , effuse at faster rate under identical experimental conditions. ${NH}_{3}$ liquefies at very low temperature. Therefore, liquid ${NH}_{3}$ is used as a refrigerant.

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pBlock ElementsII 1 Question 42

42. Which of the following is incorrect statement?

Answer:

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