p-block Elements-I Chemistry Test Series IIT JEE

Test Preparation on p-block Elements-I-Chemistry Test Series IIT JEE-2020

1.

Percentage of lead in lead pencil is-

10
220
380
470

2.

Which has the lowest boiling point

1NH3
2PH3
3AsH3
4SbH3

3.

Which of the following elements does not form stable diatomic
molecules

1Iodine
2Phosphorus
3Nitrogen
4Oxygen

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