Class 12 Chemistry Chapter 7 p Block Elements MCQs | Short Questions with Answers on Class 12 Chemistry Chapter 7 p Block Elements

Sports GK Questions and Answers 2024 (Latest Updated)

Awards & Honours GK Questions 2024 (Latest Updated)

Questions
1 On heating NaCl + K2 Cr2O7 + Conc. H2SO4, we get
A O2
B Cl2
C CrOCl2
D CrO2Cl2

Answer:CrO2Cl2
2 Amongst LiCl , RbCl , BeCl2 & MgCl2 , max. & min. ionic character will be shown by
A LiCl , MgCl2
B RbCl , BeCl2
C RbCl , MgCl2
D MgCl2,BeCl2

Answer: RbCl , BeCl2
3 Which of following chloride is water insoluble
A HCl
B AgCl
C both 'a' & b
D None

Answer:AgCl
4 The alkali metal halide are soluble in water but LiF is insoluble because
A It's Amphoteric
B Li -F is highly ionic
C It's Lattice energy is high
D Li+ ion is least hydrated

Answer:It's Lattice energy is high
5 Which of following is present as an active ingredient in bleaching powder for bleaching action
A CaCl2
B CaOCl2
C Ca(OCl)2
D CaO2Cl

Answer: Ca(OCl)2
6 ClO2 reacts with O3 to give
A Cl2O4
B Cl2O
C Cl2O6
D ClO4

Answer: Cl2O6
7 Bad conductor Of electricity is
A H2F2
B HCl
C HBr
D HI

Answer: H2F2
8 When KBr is treated with concentrated H2SO4 redish brown gas evolved, gas is
A Mixture of Br & HBr
B Bromine & HNO3
C Bromine
D None of these

Answer:Bromine
9 Which of following outter electronic configuration represents Ar?
A ns2
B ns2 np6
C ns2 np5
D ns2 np4

Answer:ns2 np6
10 Which mineral was used in isolation of radium?
A Lime stone
B Pitch blende
C Rectile
D Haematite

Answer: Pitch blende
11 Molecules of noble gas do not posses vibrational energy bec. Noble gas is
A Monoatomic
B Chemically inert
C Complete filled shells
D Is diatomic

Answer:Monoatomic
12 Argon was discovered by
A Rayleigh
B Frankland & Lockyer
C Jansen
D Ramsay

Answer: Ramsay
13 The colour discharge tubes for advertisement mainly contain
A Argon
B Neon
C Helium
D Xenon

Answer: Helium
14 Least chemical activity is shown by
A Nitrogen
B Argon
C Methane
D Xenon

Answer:Argon
15 Noble gases do not react with other elements because
A They have completely paired up & stable e - configuration
B Their size is very small
C Are monoatomic
D None of these

Answer:They have completely paired up & stable e - configuration
16 Monazite is source of
A He
B Kr
C Ar
D Ne

Answer:He
17 He is added to oxygen supply used by deep sea divers because
A It's less soluble in blood than Nitrogen at high pressure
B It is Lighter than Nitrogen
C It is readily miscible in oxygen
D It is less poisionous than Nitrogen

Answer:It's less soluble in blood than Nitrogen at high pressure
18 Which of following is not correct for noblegas?
A Ar is used in electric bulbs
B Kr is obtained during radioactive disintegration
C Half life of Rn is 3.8 days
D He is used to produce Low temp

Answer:Kr is obtained during radioactive disintegration
19 Which of following represents noble gas configuration.
A 1S2, 2S2 2P6, 3S2 3P5
B 1S2, 2S2 2P6, 3S2 3P6
C 1S2, 2S2 2P6
D 1S2 , 2S2

Answer:1S2, 2S2 2P6, 3S2 3P6
20 Which of following has zero valency
A Sodium
B Beryllium
C Aluminium
D Krypton

Answer:Krypton

Random GK Questions

Q. Vulcanized rubber contains sulphur
Q. List of Fundamental Duties were added to the Indian Constitution as Part
Q. With which period do we associate the “Megaliths” ?
Q. Labour Intensive Technique would get chosen in a
Q. What is the chemical name for baking soda?
Q. The Second Five Year Plan laid more stress upon:

Chapters

Assam Direct Recruitment Test Series

Teacher Eligibility Test

Assam Direct Recruitment Test Series