Test: Previous Year Questions - P Block (Level 1)


9 Questions MCQ Test Chemistry Class 12 | Test: Previous Year Questions - P Block (Level 1)


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This mock test of Test: Previous Year Questions - P Block (Level 1) for Class 12 helps you for every Class 12 entrance exam. This contains 9 Multiple Choice Questions for Class 12 Test: Previous Year Questions - P Block (Level 1) (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Previous Year Questions - P Block (Level 1) quiz give you a good mix of easy questions and tough questions. Class 12 students definitely take this Test: Previous Year Questions - P Block (Level 1) exercise for a better result in the exam. You can find other Test: Previous Year Questions - P Block (Level 1) extra questions, long questions & short questions for Class 12 on EduRev as well by searching above.
QUESTION: 1

The correct no. of lone pairs on the central atom of compounds XeF2, XeF4 & XeF6are respectively-

[AIEEE-2002]

Solution:
QUESTION: 2

The no. of s bonds in the compound P4O10 is -  

[AIEEE-2002]

Solution:
QUESTION: 3

The number of hydrogen atoms (s) attached to phosphorus atom in hypophosphorous acid  is –

[AIEEE-2005]

Solution:
QUESTION: 4

What products are expected from the disproportionation reaction of hypochlorous acid –

 [AIEEE- 2006]

Solution:

QUESTION: 5

Which one of the following statements regarding helium is incorrect 

[AIEEE 2004]

Solution:

Helium is twice as heavy as hydrogen; its lifting power is 92% of that of hydrogen. Helium has the lowest melting and boiling point of any element which makes liquid helium an ideal coolant for many extremely low temperature application such as super conducting magnet and cryogenic research where temperature close to absolute zero are needed.

Hence C

QUESTION: 6

 Which one of the following reactions of Xenon compounds is not feasible ?

 [AIEEE-2009]

Solution:

XeO3​+6HF⟶XeF6​+3H2​O

This reaction is not feasible because the products again react to give reactants back. All the xenon fluorides easily undergo hydrolysis and give xenon oxides but the opposite is not possible.

Hence D

QUESTION: 7

In which of the following arrangements, the sequence is not strictly according to the property written against it ?    

[AIEEE-2009]

Solution:
QUESTION: 8

 Identify the incorrect statement from the following -

[AIEEE-2011]

Solution:
QUESTION: 9

The number of types of bonds between two carbon atoms in calcium carbide is -

[AIEEE-2011]

Solution:

CaC2 has a combination of bonds. It is an ionic lattice that has Ca(2+) cations and acetylide C2(2-) anions. Within each C2(2-), there is a triple bond between the 2 C atoms, consisting of 1 sigma and 2 pi bonds.