Refer to CBSE Class 12 Chemistry The p Block Elements MCQs Set D provided below available for download in Pdf. The MCQ Questions for Class 12 Chemistry with answers are aligned as per the latest syllabus and exam pattern suggested by CBSE, NCERT and KVS. Chapter 7 The p Block Elements Class 12 MCQ are an important part of exams for Class 12 Chemistry and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 12 Chemistry and also download more latest study material for all subjects
MCQ for Class 12 Chemistry Chapter 7 The p Block Elements
Class 12 Chemistry students should refer to the following multiple-choice questions with answers for Chapter 7 The p Block Elements in Class 12.
Chapter 7 The p Block Elements MCQ Questions Class 12 Chemistry with Answers
Question: Industrial name of H2S2O7 is
(a) pyrosulphuric acid
(b) Marshall ‘s acid
(c) oleum
(d) All of these
Answer: c
Question: Which of the following oxides, at the same concentration when dissolved in water, results in the most acidic solutions ?
(a) CO2
(b) B2O3
(c) N2H5
(d) Li2O2
Answer: c
Question: NO2 is not obtained on heating
(a) AgNO3
(c) Cu(NO3)2
(b) KNO3
(d) Pb(NO3)2
Answer: b
Question: Hydrolysis of NCI3 gives NH3 and X. Which of the following is X ?
(a) HCIO4
(b) HCIO3
(c) HOCI
(d) HCIO2
Answer: c
Question: Bleaching action of SO2 is due to its
(a) oxiclising property
(b) acidic property
(c) basic property
(d) reducing property
Answer: d
Question: Which of the following phosphorus is the most reactive?
(a) Red phosphorus
(b) White phosphorus
(c) Scarlet phosphorus
(d) Violet phosphorus
Answer: b
Question: If NO2 (N2O4 ) is dissolved in NaOH, we get solution of
(a) NaNO2
(b) NaNO3
(c) mixture of NaNO2 and NaNO2
(d) NaNO4
Answer: c
Question: Reaction of HNO3 with I, S, P and C gives respectively
(a) HIO3 , H2SO4, H3PO4 and CO2
(b) HIO3 , H2SO4 , H3PO3 and CO2
(c) HIO2 , H2SO4, H3PO4 and CO
(d) I2O5 , SO2 , P2O and CO2
Answer: a
Question: What are the products obtained when ammonia is reacted with excess chlorine ?
(a) N2 and NCI3
(c) N2 and NH4Cl
(b) N2 and HCl
(d) NCI3 and HCl
Answer: d
Question: Given are H3PO2 , H3PO3, H3PO4 and H4P2O7 .
Which of the above oxoacids results into two series of salts ?
(a) H3PO2
(b) H3PO3
(c) H3PO4
(d) H4P2O7
Answer: b
Question: The correct order of acidic nature of oxides is in the order
(a) NO < N2O < N2O3 < NO2 < N2O5
(b) N2O < NO < N2O3 < NO2 < N2O5
(c) N2O5 < NO2 < N2O3 < NO < N2O
(d) N2O5 < N2O3 < NO2 < NO < N2O
Answer: b
Question: Solid N2O5 is
(a) ionic
(c) coordinate covalent
(b) covalent
(d) metallic
Answer: a
Question: The bond angle in NF3 (102.3°) is smaller than NH3 (107.2°). This is because of
(a) large size of F compared of H
(b) large size of N compared of F
(c) opposite polarity of N in the two molecules
(d) small size of H compared to N
Answer: c
Question: Which is the anhydride of nitric acid ?
(a) NO
(b) NO2
(c) N2O3
(d) N2O5
Answer: d
Question: Correct order of decreasing thermal stability is as
(a) NH3 > PH3 > AsH3 > SbH3
(b) PH3 > NH3 > AsH3 > SbH3
(c) AsH3 > PH3 > NH3 > SbH3
(d) SbH3 > AsH3 > PH3 > NH3
Answer: a
Question: An element belongs to group 15 and third period of the periodic table. Its electronic configw-ation will be
(a) ls22s22p3
(b) ls22s22p4
(c) ls22s22p63p23p3
(d) ls22s22p63p23p2
Answer: c
Question: Which one of the following is least covalent in nature?
(a) NF3
(b) BiF3
(c) PF3
(d) SbF3
Answer: b
Question: Which of the following properties is not shown by NO?
(a) It is diamagnetic in gaseous state
(b) It is a neutral oxide
(c) It combines with oxygen to form nitrogen dioxide
(d) Its bond order is 2.5
Answer: a
Question: Which one of the following pentafluorides cannot be formed?
(a) PF5
(b) AsF5
(c) SbF5
(d) BiF5
Answer: d
Question: Thebasicity of H3PO4 is
(a) 2
(b) 3
(c) 4
(d) 5
Answer: b
Question: H3PO3 has ………. non-ionisable P- Hbonds.
(a) 3
(b) 1
(c) 2
(d) None of these
Answer: b
Question: What is the product fonned when phosphorus trioxide is dissolved in water ?
(a) HPO3
(b) H3PO4
(c) H3PO3
(d) HPO2
Answer: c
Question: P4 + 3NaOH + 3H2O → A + 3NaH2PO2 , here A is
(a) NH3
(b) PH3
(c) H3PO4
(d) H3PO3
Answer: b
Question: Which of the following forms vortex ring?
(a) P2O5
(b) PH3
(c) NH3
(d) P4O10
Answer: b
Question: The decreasing values of bond angles from NH3 (107° )to SbH3 (91° )down the group-15 of the periodic table is due to
(a) increasing bp-bp repulsion
(b) increasing p-orbital character in sp3
(c) decreasing lp-bp repulsion
(d) decreasing electronegativity
Answer: d
Question: Zinc and cold dil. HNO3 reacts to produce
(a) NO
(b) NO2
(c) NH4NO3
(d) ZnNO3
Answer: c
Question: Hypophosphorus acid, H3PO2 is
(a) a monobasic acid
(b) a tribasic acid
(c) a dibasic acid
(d) not acidic at all
Answer: a
Question: Among the following, the number of compounds that can react with PCI5 to give POCl3 is O2, CO2, SO2 , H2O ,H2SO4, P4O10 .
(a) 1
(b) 2
(c) 3
(d) 4
Answer: d
Question: Which element is used in the preparation of pesticides ?
(a) Arsenic
(b) Bismuth
(c) Antimony
(d) Nitrogez
Answer: a
Question: The catalyst used in the manufacture of H2SO4 by contact process is
(a) V2O3
(b) V2O5
(c) FeO
(d) Cu
Answer: b
Question: In which of the following, NH3 is not used?
(a) Tollen ‘s reagent
(b) Nessler’s reagent
(c) Group reagent for the analysis of IV group basic radicals
(d) Group reagent for the analysis of m group basic radicals
Answer: b
Question: The reaction of P4 with aqueous NaOH gives
(a) P(OH)3
(b) P2O5
(c) P(OH)5
(d) PH3
Answer: d
Question: Which of the following pairs is obtained on heating anunonium dichromate ?
(a) N2 and H2O
(b) N2O and H2O
(c) NO2 and H2O
(d) NO and NO2
Answer: a
Question: Liquor ammonia is
(a) ammonium hydroxide
(b) liquefied ammonia gas
(c) concentrated solution of NH3 in water
(d) a solution of NH3 in alcohol
Answer: c
Question: Liquor ammonia bottles are opened only after cooling. This is because
(a) it is a mild explosive
(b) it generates high vapour pressure
(c) Both (a) and (b)
(d) it is a lachrymatory
Answer: c
Question: Red P can be obtained by white P by
(a) heating it with a catalyst in an inert atmosphere
(b) distilling it in an inert atmosphere
(c) dissolving it in CS2 and crystallising
(d) melting it and pouring the liquid into water
Answer: a
Question: The treatment of Cu with dilute HNO3 gives
(a) N2O
(b) NO
(c) NH4+
(d) NO2
Answer: b
Question: NaNH2 + N2O → X + NaOH + NH3 .What is the X ?
(a) N3Ni
(c) NaN3
(b) Na3N
(d) None of these
Answer: c
Question: The sides of safety matches contains
(a) red phosphorus + sand powder
(b) P4S3
(c) Ca3 (PO)4 + glass pieces
(d) KClO3 , KNO3, sulphur + antimony
Answer: a
Question: SO2 doesnotactas
(a) bleaching agent
(b) oxidising agent
(c) reducing agent
(d) dehydrating agent
Answer: d
CBSE Class 12 Chemistry Amines MCQs Set A |
CBSE Class 12 Chemistry Amines MCQs Set B |
CBSE Class 12 Chemistry Amines MCQs Set C |
MCQs for Chapter 7 The p Block Elements Chemistry Class 12
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