# 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

Iron

Copper

Gold

Silver

## Questions 2 of 50

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

$$La$$

$$Sc$$

$$Ni$$

$$Cr$$

## Questions 3 of 50

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

$$Hg$$ 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

$$Cr$$

$$Hg$$

$$Cu$$

$$Au$$

## Questions 5 of 50

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

$$Cr$$

$$Ni$$

$$Mn$$

$$Mo$$

## Questions 6 of 50

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

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

Silver

Zinc

Antimony

## Questions 8 of 50

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

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

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

$$C{u^ + }$$

$$Z{n^{ + 2}}$$

$$T{i^{ + 3}}$$

$$T{i^{ + 4}}$$

## Questions 11 of 50

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

High atomic masses

d-block

f –block

## Questions 12 of 50

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

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

$$Ni$$

$$Au$$

$$Pt$$

$$Ta$$

## Questions 14 of 50

Question:Manganese is related to which block of periodic table

s-block

p-block

d-block

f -block

## Questions 15 of 50

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

V

Ti

Cr

Mn

## Questions 16 of 50

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

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

$$Zr$$ 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

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

$$BaS{O_4}$$

$$CuS{O_4}$$

$$PbS{O_4}$$

$$AgCl$$

## Questions 20 of 50

Question:Verdigris is

Basic copper acetate

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

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

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

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

Purple

Blue

White

Uncertain

## Questions 25 of 50

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

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

$$Ti{O_2}$$

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

$$KMn{O_4}$$

$$ScC{l_3}$$

## Questions 27 of 50

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

$$VOC{l_3}$$

$$VC{l_4}$$

$$VC{l_3}$$

$$VC{l_2}$$

## Questions 28 of 50

Question:Prussian blue is due to the formation of

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

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

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

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

## Questions 29 of 50

Question:Which of the following is used as white pigment

$$Ti{O_2}$$

$${V_2}{O_5}$$

$$CuO$$

$$HgO$$

## Questions 30 of 50

Question:Which metal oxide is used to make blue glass

$$F{e_2}{O_3}$$

$$CoO$$

$$C{u_2}O$$

$$NiO$$

## Questions 31 of 50

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

Copper (II) oxide

Magnesium oxide

Aluminium oxide

Calcium oxide

## Questions 32 of 50

Question:Which of the following is coloured

$$ScC{l_3}$$

$$Ti{O_2}$$

$$MnS{O_4}$$

$$ZnS{O_4}$$

## Questions 33 of 50

Question:Which is an amphoteric oxide

ZnO

CaO

BaO

SrO

## Questions 34 of 50

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

5.92

5.49

2.32

4

## Questions 35 of 50

Question:Which of the following shows dimerisation

$$HgC{l_2}$$

$${B_2}{H_6}$$

$$TiC{l_4}$$

$$S{O_2}$$

## Questions 36 of 50

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

Wurtzite

Iron pyrites

Chalcosite

Silver glance

## Questions 37 of 50

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

$$CuS{O_4}$$

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

$$ZnS{O_4}$$

$$FeS{O_4}$$

## Questions 38 of 50

Question:Rust is

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

$$F{e_2}{O_3}$$

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

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

## Questions 39 of 50

Question:The term platforming is

Platinum painting

Flat sheet of platinum

Platinum manufacturing

Platinum used as a catalyst

## Questions 40 of 50

Question:Iron loses magnetic property at

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

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

$$FeS{O_4}.N{O_2}$$

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

None of these

## Questions 42 of 50

Question:The chief constituents of steel made in India are

$$Mn$$ and $$Cr$$

$$Al$$ and $$Zn$$

$$V$$ and $$Co$$

$$Ni$$ and $$Mg$$

## Questions 43 of 50

Question:Iron when treated with concentrated nitric acid

Slowly reacts

Becomes passive

Gives ferrous nitrate

## Questions 44 of 50

Question:Stainless steel is an alloy of iron with

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

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

Copper

Nickel

Silver

Zinc

## Questions 47 of 50

Question:Which of the following is least soluble in water

$$AgI$$

$$AgCl$$

$$AgBr$$

$$A{g_2}S$$

## Questions 48 of 50

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

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

Chromium

Manganese

Silver

## Questions 50 of 50

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