D and F block Test 5

Total Questions:50 Total Time: 75 Min



Questions 1 of 50

Question:Which is heaviest among the following

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Questions 2 of 50

Question:Which of the following transition metal is present in misch metal

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Questions 3 of 50

Question:The main reason for not using a mercury electrolytic cell in \(NaOH\) manufacture is that

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\(Hg\) is toxic

\(Hg\) is a liquid

\(Hg\) has a high vapour pressure

\(Hg\) is a good conductor of electricity

Questions 4 of 50

Question:In the following transition elements, the lowest M.P. and B.P. is exhibited by

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Questions 5 of 50

Question:To support tungstun filament in electric bulb, the steel used is

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Questions 6 of 50

Question:In the periodic table first transition series is placed in

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Third period

Fourth period

Fifth period

None of these

Questions 7 of 50

Question:Which of the following elements is alloyed with copper to form brass

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Questions 8 of 50

Question:The 3d-metal ions are paramagnetic in nature because

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They are reducing agents

They form coloured salts

They have one or more paired s-electrons

They have one or more unpaired d-electrons

Questions 9 of 50

Question:The placement of \(Zn,\) \(Cd\) and \(Hg\) along with \('d'\) block elements is not proper because

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Their \('d'\) orbitals are completely filled

Their \('d'\) orbitals are empty

They do not form complex compounds

They do not form coloured compounds

Questions 10 of 50

Question:Which of the following ions is paramagnetic

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\(C{u^ + }\)

\(Z{n^{ + 2}}\)

\(T{i^{ + 3}}\)

\(T{i^{ + 4}}\)

Questions 11 of 50

Question:A reduction in atomic size with increase in atomic number is a characteristic of elements of

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High atomic masses


f –block

Radioactive series

Questions 12 of 50

Question:In transition elements, the orbitals partially filled by electrons are

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s – orbitals

p – orbitals

d – orbitals

f - orbitals

Questions 13 of 50

Question:In human body if necessary, the plate, screw or wire used for surgery are made up of

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Questions 14 of 50

Question:Manganese is related to which block of periodic table

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f -block

Questions 15 of 50

Question:Which of the following element has maximum first ionisation potential

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Questions 16 of 50

Question:A metal M having electronic configuration \(M\)-\(1{s^2}2{s^2}2{p^6}3{s^2}3{p^6}3{p^6}3{d^{10}}4{s^1}\)

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s-block element

d-block element

p-block element

None of these

Questions 17 of 50

Question:The lanthanide contraction is responsible for the fact that

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\(Zr\) and \(Y\) have about the same radius

\(Zr\) and \(Nb\) have similar oxidation state

\(Zr\) and \(Hf\) have about the same radius

\(Zr\) and \(Zn\) have the same oxidation sate

Questions 18 of 50

Question:Which of the following factors may be regarded as the main cause of lanthanide contraction

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Poor shielding of one of \(4f\) electron by another in the subshell

Effective shielding of one of \(4f\) electrons by another in the subshell

Poorer shielding of \(5d\) electrons by \(4f\) electrons

Greater shielding of \(5d\) electron by \(4f\) electrons

Questions 19 of 50

Question:A white powder soluble in \(N{H_4}OH\) but insoluble in water is

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Questions 20 of 50

Question:Verdigris is

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Basic copper acetate

Basic lead acetate

Basic lead

None of these

Questions 21 of 50

Question:In alkaline condition \(KMn{O_4},\) reacts as follows : \(2KMn{O_4} + 2KOH \to 2{K_2}Mn{O_4} + {H_2}O + O\) Therefore its equivalent weight will be

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Questions 22 of 50

Question:Equivalent weight of \(KMn{O_4}\) acting as an oxidant in acidic medium is equal to

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Molecular weight of \(KMn{O_4}\)

\(\frac{1}{2}\)´ Molecular weight of \(KMn{O_4}\)

\(\frac{1}{3}\)´ Molecular weight of \(KMn{O_4}\)

\(\frac{1}{5}\)´ Molecular weight of \(KMn{O_4}\)

Questions 23 of 50

Question:The equivalent weight of \({K_2}C{r_2}{O_7}\) in acidic medium

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Questions 24 of 50

Question:The transitional element of III-B group is isomorphic with \(A{l_2}{(S{O_4})_3}\). Therefore the compound will be

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Questions 25 of 50

Question:\({K_3}\left[ {Fe{{(CN)}_6}} \right]\) is called

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Potassium ferricyanide

Red prussiate of potash

Potassium hexacyanoferrate (III)

All of these

Questions 26 of 50

Question:Which of the following will show increase in weight when kept in magnetic field

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Questions 27 of 50

Question:Which of the following exhibit maximum oxidation state of vanadium

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Questions 28 of 50

Question:Prussian blue is due to the formation of

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\(F{e_4}{\left[ {Fe{{(CN)}_6}} \right]_3}\)

\(F{e_2}\left[ {Fe{{(CN)}_6}} \right]\)

\(F{e_3}\left[ {Fe{{(CN)}_6}} \right]\)

\(Fe{\left[ {Fe{{(CN)}_6}} \right]_3}\)

Questions 29 of 50

Question:Which of the following is used as white pigment

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Questions 30 of 50

Question:Which metal oxide is used to make blue glass

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Questions 31 of 50

Question:Which can be reduced to the metal by heating it in a stream of hydrogen

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Copper (II) oxide

Magnesium oxide

Aluminium oxide

Calcium oxide

Questions 32 of 50

Question:Which of the following is coloured

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Questions 33 of 50

Question:Which is an amphoteric oxide

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Questions 34 of 50

Question:What is the magnetic moment of \({[Fe{F_6}]^{3 - }}\)

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Questions 35 of 50

Question:Which of the following shows dimerisation

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Questions 36 of 50

Question:Which of the following is also known as “Fools gold”

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Iron pyrites


Silver glance

Questions 37 of 50

Question:Iodine is formed when KI reacts with a solution of

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Questions 38 of 50

Question:Rust is

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\(FeO + Fe{(OH)_2}\)


\(F{e_2}{O_3} + Fe{(OH)_2}\)

\(F{e_2}{O_3}\) and \(Fe{(OH)_3}\)

Questions 39 of 50

Question:The term platforming is

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Platinum painting

Flat sheet of platinum

Platinum manufacturing

Platinum used as a catalyst

Questions 40 of 50

Question:Iron loses magnetic property at

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Melting point


Curie point

Boiling point

Questions 41 of 50

Question:When conc. sulphuric acid is added slowly to a solution of ferrous sulphate containing nitrate ion, a brown colour ring is formed. The composition of the ring is

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None of these

Questions 42 of 50

Question:The chief constituents of steel made in India are

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\(Mn\) and \(Cr\)

\(Al\) and \(Zn\)

\(V\) and \(Co\)

\(Ni\) and \(Mg\)

Questions 43 of 50

Question:Iron when treated with concentrated nitric acid

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Readily reacts

Slowly reacts

Becomes passive

Gives ferrous nitrate

Questions 44 of 50

Question:Stainless steel is an alloy of iron with

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8% Cr, 50% Mn

10% Ni, 2% Mn

2% Cr, 3% C

12% Cr, 1% N

Questions 45 of 50

Question:Zinc forms two important alloys, (i) Brass and (ii) German silver. Metals present in them mainly are

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In (i) zinc and tin; and in (ii) zinc, silver and nickel

In (i) zinc and iron; and in (ii) zinc, nickel and cobalt

In (i) zinc and copper; and in (ii) zinc, copper and nickel

In (i) zinc and aluminium; and in (ii) zinc, nickel and aluminium

Questions 46 of 50

Question:A metal when left exposed to the atmosphere for some time becomes coated with green basic carbonate. The metal in question is

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Questions 47 of 50

Question:Which of the following is least soluble in water

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Questions 48 of 50

Question:To prevent corrosion, iron pipes carrying drinking water are covered with zinc. The process involved is

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Cathodic protection

Questions 49 of 50

Question:While extracting an element from its ore, the ore is ground and leached with dilute \(KCN\) solution to form the soluble product potassium argentocyanide. The element is

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Questions 50 of 50

Question:The extraction of which of the following metals involves bessemerisation

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