CBSE Class 12 Chemistry The d and f Block Elements Worksheet Set B

Question: The third ionisation enthalpy is minimum form
a) Mn
b) Ni
c) Co
d) Fe

Answer: d

Question: Which of the following compounds form the basis, if Ziegler-Natta catalysts is used to manufacture of polythene?
a) TiCl₄
b) Al(CH₃)₃
c) TiCl₄ with Al(CH₃)₃
d) None of these

Answer: c

Question: Which of the following element does not have (n −1) d¹⁰ ns² electronic configuration?
a) Zⁿ
b) C^d
c) H^g
d) C^u

Answer: d

Question: The ground state electronic configuration of neutral titanium atom is
a) [Ar] 4s²4p²
b) [Ar] 3d²4s²
c) [Ar] 4s² p¹_xp¹_y
d) [Ar] 3d⁵

Answer: b

Question: Which element can have oxidation state from 4 to 6?
a) Fe
b) Mg
c) Co
d) Cr

Answer: d

Question: Which of the following aqueous solutions will be coloured?
a) Zn(NO₃)₂
b) LiNO₃
c) CoNO₃
d) HgCl₂

Answer: c

Question: Acidified potassium dichromate oxidises
a) iodides to iodine
b) sulphides to sulphur
c) tin (IV) to tin (II)
d) Both (a) and (b)

Answer: d

Question: Magnetic moment of a transition metal ion is found to be 3.87 BM. The number of unpaired electrons present in it is
a) 2
b) 3
c) 4
d) 5

Answer: b

Question: Which of the following can react with K₂Cr₂O₇ ?
a) SO₃⁻²
b) CO₃⁻²
c) SO₄⁻²
d) NO₃⁻

Answer: a

Question: Permanganate ion (MnO₄⁻)   is dark purple coloured though Mn is in + 7 oxidation state with d⁰ configuration. This is due to
a) d-d transition
b) charge transfer from metal to ligand
c) charge transfer from ligand to metal
d) All of the above

Answer: c

Question: Which of the following pairs has the same size?
a) Zn²⁺ ,Hf⁴⁺
b) Fe²⁺ ,Ni²⁺
c) Zr⁴⁺ ,Ti⁴⁺
d) Zr⁴⁺ ,Hf⁴⁺

Answer: d

Question: Name the gas that can readily decolourise acidified KMnO₄ solution.
a) CO₂
b) SO₂
c) NO₂
d) P₂O₅

Answer: b

Question: The product of following reaction is
K₂CrO₄dil.HNO₃ (excess)→
a) Cr3 and Cr₂O₇²⁻
b) Cr₂O₇²⁻ ,NO₃^- and H₂O 
c) Only Cr³⁺
d) Only Cr⁷⁺

Answer: b

Question: Dichromates are generally prepared by the fusion of chromite ore with
a) sodium carbonate
b) potassium carbonate
c) Both (a) and (b)
d) Neither (a) nor (b)

Answer: c

Question: The green manganate and purple permanganate are respectively
a) paramagnetic, diamagnetic
b) diamagnetic, paramagnetic
c) paramagnetic, paramagnetic
d) diamagnetic, diamagnetic

Answer: a

Question: The correct order of ionic radii of Ce, Pm, Gd and Dy in +3 oxidation state is
a) Ce³⁺ < Gd³⁺ < Pm³⁺ < Dy³⁺   
b) Ce³⁺ < Pm³⁺ < Gd³⁺ < Dy³⁺
c) Dy³⁺ < Gd³⁺ `< Pm³⁺ < Ce³⁺
d) Pm³⁺ < Ce³⁺ < Dy³⁺ < Gd³⁺

Answer: c

Question: The actinoids resemble the lanthanoids in having more compounds in
a) +3 state
b) +4 state
c) +5 state
d) +2 state

Answer: a

Question: A man made white silvery metal, radioactive in nature, has strong tendency to form oxocations and complexes. It is used as a nuclear fuel in atomic reactor. This metal is a
a) actinide
b) lanthanide
c) representative element
d) transition metal

Answer: a

Question: The most common lanthanoid among the following is
a) lanthanum
b) cerium
c) promethium
d) plutonium

Answer: b

Question: All the actinoids are believed to have the electronic configuration of
a) 6s²
b) 7s²
c) 5f¹⁴
d) 6d¹⁰

Answer: b

Question: What will be the most common oxidation state shown by the actinoids?
a) −3
b) +3
c) −4
d) +4

Answer: b

Question: Compound(s) useful in the battery industries is/are
a) MnO₂
b) Zn
c) Ni/Cd
d) All of these

Answer: d

Question: Which of the following elements shows maximum number of different oxidation states in its compounds?
a) Eu
b) La
c) Gd
d) Am

Answer: d

Question: Which of the following alloys contain Cu and Zn?
a) Brass
b) Bronze
c) Bell metal
d) All of these

Answer: a

Question: Catalyst used in the oxidation of SO₂ in the manufacture of H₂SO₄ is
a) CuCl₂
b) V₂O₅
c) MnO₂
d) None of thesee

Answer: b

CBSE Class 12 Chemistry The d and f Block Elements Worksheet Set B

              Very Short Answer

Q1)       Which chemical is used in leather industry?

Q2)       Which transition element does not exhibit variable oxidation states?

Q3)       How the magnetic moments calculated?

Q4)       Define coloured ions?

Q5)       What is Bohr magneton?

             

              Short Answer

Q6)       What do you mean by the formation of the coloured ions?

Q7)       What are the physical and chemical charactestics of the interstitial compounds?

Q8)       What do you understand by the mischmetall of f- block?

Q9)       What do you mean by disproportionation?

Q10)     What are the uses of potassium permanganate?

             

              Long Answer

Q11)     What are the applications of the d- and f- block elements?

Q12)     State the difference between lanthanides and actinides?

Q13)     Write short note on the inner transition elements?

Q14)     State the difference between periodic table and modern periodic table?

Q15)     State the difference between lanthanide contraction and actinide contraction?

Question: Cash deposit with the bank with a maturity date after two months belongs to which of the following in the cash flow statement:

a) Investing activities

b) Financing activities

c) Cash and Cash equivalents

d) Operating activities

Answer: Cash and Cash equivalents

Question: Refer to Q. 10, calculate the amount of purchase of Machinery.

a) Rs. 1,50,000

b) Rs. 3,00,000

c) Rs. 11,50,000

d) Rs. 50,000

Answer: Rs. 1,50,000

Question: In a statement of cash flows, a company investing in short-term financial investments and in fixed assets results in

a) Decreased cash

b) Increased cash

c) Increased liabilities

d) Increased equity

Answer: Decreased cash

Question: GSC Ltd. purchased machinery of Rs. 10,00,000 issuing a cheque of Rs. 2,50,000 and 10% Debentures of Rs. 7,50,000. ln the Cash Flow Statement, the transaction will be shown as

a) Outflow under Investing Activity Rs. 10,00,000, inflow under Financing Activity as Receipt for Debentures Rs. 7,50,000.

b) Outflow under investing Activity Rs. 2,50,000.

c) Inflow of Rs. 7,50,000 as Financing Activity.

d) None of the above.

Answer: Outflow under investing Activity Rs. 2,50,000.

Question: Dividend paid by a non-financial company is shown as

a) Operating Activity.

b) Investing Activity.

c) Financing Activity.

d) Cash and Cash Equivalent.

Answer: Financing Activity.

Question: In the case of financial enterprises, the cash flow resulting from interest and dividend received and interest paid should be classified as cash flow from

a) Operating activities

b) Financing activities

c) Investing activities

d) All of the options

Answer: Operating activities

Question: Increase in creditors results in _____________ of cash

a) Inflow cash

b) Outflow cash

c) No change in cash

d) All of the options

Answer: Inflow cash

Question: The principal revenue-producing activities of an entity are called

a) Operating activities

b) Financing activities

c) Investing activities

d) All of the options

Answer: Operating activities

Question: Which of the following are cash flow from operating activities

a) Cash Receipts from customers and Cash Paid to Supplier and Employees

b) Cash Receipts from customers

c) Cash Paid to Supplier and Employees

d) None of the options

Answer: Cash Receipts from customers and Cash Paid to Supplier and Employees

Question: The word fund means the difference of _______ and _______

a) Current Assets and Current Liabilities

b) Sundry Creditors and Sundry Debtors

c) Profit and Loss

d) All of the options

Answer: Current Assets and Current Liabilities

Question: A decrease in the current liability Income Taxes Payable.

a) Operating Activity

b) Investing Activity

c) Financing Activity

d) Supplemental Activity

Answer: Operating Activity 

Question: Redemption of preference Shares is concerned directly with

a) Financing Activities

b) Investing Activities

c) Operating Activities

d) All of the options

Answer: Financing Activities

Question: Cash deposit with the bank with a maturity date after two months belongs to which of the following

a) Cash and Cash Equivalents

b) Investing Activities

c) Financing Activities

d) Both Investing and Financing

Answer: Cash and Cash Equivalents

Question: Retirement of long term Bonds Payable.

a) Financing Activity

b) Investing Activity

c) Operating Activity

d) Supplemental Activity

Answer: Financing Activity

Question: Which of the following are cash flow from financing activities

a) Interest paid and Dividend paid

b) Interest paid

c) Dividend paid

d) None of the options

Answer: Interest paid and Dividend paid

Question: Mention the net amount of sourceof cash when a fixed asset (having book value of Rs. 15,000) is sold at a loss of Rs. 5,000.

a) Rs. 10000

b) Rs. 15000

c) Rs. 20000

d) Rs. 30000

Answer: Rs. 10000

Question: Depreciation Expense is

a) Operating Activity

b) Investing Activity

c) Financing Activity

d) Supplemental Activity

Answer: Operating Activity

Question: Dividend received by other than financial enterprise is shown in Cash Flow Statement under

a) Operating Activities.

b) Investing Activities.

c) Financing Activities.

d) General Activities.

Answer: Investing Activities.

Question: Increase in Bank Overdraft balance _____________

a) Add in Financing Activities

b) Add in Operating Activities

c) Less in Operating Activities

d) Less in Financing Activities

Answer: Add in Financing Activities

Question: Sale of Copyrights is concerned with_______

a) Investing Activities

b) Operating Activities

c) Both Operating Activities and Financing Activities

d) Financing Activities

Answer: Investing Activities

 

Please click on below link to download CBSE Class 12 Chemistry The d and f Block Elements Worksheet Set B