P-Block Elements Group 13 to 18-Group 15 [JEE (Based on NTA Guidelines-IIT Engg.) Mains Chemistry]: Questions 1 - 6 of 14
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Question 1
Question MCQ▾
The state of hybridization of the central atom and the number of lone pairs over the central atom in POCl3 are?
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 2
Question 3
Question MCQ▾
One mole of H3PO3 on reaction with excess of NaOH gives?
Choices
Choice (4) | Response | |
---|---|---|
a. | One mole of | |
b. | One mole of | |
c. | Two moles of | |
d. | Two moles of |
Question 4
Question MCQ▾
White phosphorus on reaction with limewater gives calcium salt of an acid (A) along with a gas (X) . Which of the following is correct?
Choices
Choice (4) | Response | |
---|---|---|
a. | The bond angle in (X) is less than that in case of ammonia | |
b. | (X) is more basic than ammonia | |
c. | (A) on heating gives (X) and O2 | |
d. | (A) is dibasic acid |
Question 5
Question MCQ▾
If O2 is removed from the formula of anhydride of HNO2, then the formula of the resulting compound satisfies which of the following properties?
Choices
Choice (4) | Response | |
---|---|---|
a. | It supports combustion | |
b. | It is paramagnetic | |
c. | It cannot react with red hot copper | |
d. | It produces tears in eyes |
Question 6
Question MCQ▾
The equivalent mass of phosphoric acid in the reaction, ?
Choices
Choice (4) | Response | |
---|---|---|
a. | 98 | |
b. | 49 | |
c. | 59 | |
d. | 25 |