D and F block Test 5

Total Questions:50 Total Time: 75 Min

Remaining:

 

Questions 1 of 50

Question:Which is heaviest among the following

Answers Choices:

Iron

Copper

Gold

Silver

Questions 2 of 50

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

Answers Choices:

\(La\)

\(Sc\)

\(Ni\)

\(Cr\)

Questions 3 of 50

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

Answers Choices:

\(Hg\) 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

Answers Choices:

\(Cr\)

\(Hg\)

\(Cu\)

\(Au\)

Questions 5 of 50

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

Answers Choices:

\(Cr\)

\(Ni\)

\(Mn\)

\(Mo\)

Questions 6 of 50

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

Answers Choices:

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

Answers Choices:

Lead

Silver

Zinc

Antimony

Questions 8 of 50

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

Answers Choices:

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

Answers Choices:

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

Answers Choices:

\(C{u^ + }\)

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

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

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

Questions 11 of 50

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

Answers Choices:

High atomic masses

d-block

f –block

Radioactive series

Questions 12 of 50

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

Answers Choices:

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

Answers Choices:

\(Ni\)

\(Au\)

\(Pt\)

\(Ta\)

Questions 14 of 50

Question:Manganese is related to which block of periodic table

Answers Choices:

s-block

p-block

d-block

f -block

Questions 15 of 50

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

Answers Choices:

V

Ti

Cr

Mn

Questions 16 of 50

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

Answers Choices:

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

Answers Choices:

\(Zr\) 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

Answers Choices:

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

Answers Choices:

\(BaS{O_4}\)

\(CuS{O_4}\)

\(PbS{O_4}\)

\(AgCl\)

Questions 20 of 50

Question:Verdigris is

Answers Choices:

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

Answers Choices:

31.5

52.7

72

158

Questions 22 of 50

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

Answers Choices:

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

Answers Choices:

294

298

49

50

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

Answers Choices:

Purple

Blue

White

Uncertain

Questions 25 of 50

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

Answers Choices:

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

Answers Choices:

\(Ti{O_2}\)

\(F{e_2}{(S{O_4})_3}\)

\(KMn{O_4}\)

\(ScC{l_3}\)

Questions 27 of 50

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

Answers Choices:

\(VOC{l_3}\)

\(VC{l_4}\)

\(VC{l_3}\)

\(VC{l_2}\)

Questions 28 of 50

Question:Prussian blue is due to the formation of

Answers Choices:

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

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

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

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

Questions 29 of 50

Question:Which of the following is used as white pigment

Answers Choices:

\(Ti{O_2}\)

\({V_2}{O_5}\)

\(CuO\)

\(HgO\)

Questions 30 of 50

Question:Which metal oxide is used to make blue glass

Answers Choices:

\(F{e_2}{O_3}\)

\(CoO\)

\(C{u_2}O\)

\(NiO\)

Questions 31 of 50

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

Answers Choices:

Copper (II) oxide

Magnesium oxide

Aluminium oxide

Calcium oxide

Questions 32 of 50

Question:Which of the following is coloured

Answers Choices:

\(ScC{l_3}\)

\(Ti{O_2}\)

\(MnS{O_4}\)

\(ZnS{O_4}\)

Questions 33 of 50

Question:Which is an amphoteric oxide

Answers Choices:

ZnO

CaO

BaO

SrO

Questions 34 of 50

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

Answers Choices:

5.92

5.49

2.32

4

Questions 35 of 50

Question:Which of the following shows dimerisation

Answers Choices:

\(HgC{l_2}\)

\({B_2}{H_6}\)

\(TiC{l_4}\)

\(S{O_2}\)

Questions 36 of 50

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

Answers Choices:

Wurtzite

Iron pyrites

Chalcosite

Silver glance

Questions 37 of 50

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

Answers Choices:

\(CuS{O_4}\)

\({(N{H_4})_2}S{O_4}\)

\(ZnS{O_4}\)

\(FeS{O_4}\)

Questions 38 of 50

Question:Rust is

Answers Choices:

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

\(F{e_2}{O_3}\)

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

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

Questions 39 of 50

Question:The term platforming is

Answers Choices:

Platinum painting

Flat sheet of platinum

Platinum manufacturing

Platinum used as a catalyst

Questions 40 of 50

Question:Iron loses magnetic property at

Answers Choices:

Melting point

1000K

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

Answers Choices:

\([Fe{({H_2}O)_5}NO]S{O_4}\)

\(FeS{O_4}.N{O_2}\)

\(Fe[{({H_2}O)_5}]{(N{O_3})_2}\)

None of these

Questions 42 of 50

Question:The chief constituents of steel made in India are

Answers Choices:

\(Mn\) and \(Cr\)

\(Al\) and \(Zn\)

\(V\) and \(Co\)

\(Ni\) and \(Mg\)

Questions 43 of 50

Question:Iron when treated with concentrated nitric acid

Answers Choices:

Readily reacts

Slowly reacts

Becomes passive

Gives ferrous nitrate

Questions 44 of 50

Question:Stainless steel is an alloy of iron with

Answers Choices:

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

Answers Choices:

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

Answers Choices:

Copper

Nickel

Silver

Zinc

Questions 47 of 50

Question:Which of the following is least soluble in water

Answers Choices:

\(AgI\)

\(AgCl\)

\(AgBr\)

\(A{g_2}S\)

Questions 48 of 50

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

Answers Choices:

Photoelectrolysis

Electroplating

Galvanization

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

Answers Choices:

Lead

Chromium

Manganese

Silver

Questions 50 of 50

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

Answers Choices:

Fe

Ag

Al

Cu