Question # 1

Reaction of HNO, with very dilute Zinc and at low temperature gives

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H₂

NO

NO₂

NH₄

Which are metalloid?

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Nitrogen and phosphorous

Arsenic and phosphorous antimony

Phosphorous and arsenic

Antimony and bismuth

Ring testis given by ions.

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Nitrides

Nitrates

Cyanates

Nitriles

Which element of group IV-A does not use d — orbital?

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N

P

As

Sb

Posphorus belongs to a group

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III-A

IV-A

V-A

VI-A

Which has garlic like odour?

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N₂O

NO

NO₂

NH₄

Which element belongs to group V-A?

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Cs

Ba

Sr

Bi

Which is an inert gas?

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Nitrogen

Oxygen

Hydrogen

CO

Which phosphorus is the most poisonous?

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White

Red

Black

All

The brown gas formed when metal reduces HNO₃is

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N₂O₅

N₂O₃

NO₂

NO

Aqua Regia has ratio of conc. HCl and HNO₃

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1 : 2

1 : 3

1 : 4

2 : 3

Tungsten and Uranium are turned to an reaction with HNO₃:

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Oxides

chlorides

Nitrides

Nitrates

Which property is not present in non-methals

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Predominantly covalent

Poor conductor

Hig E.N. value

High electropositivity

SO₃ is not absorbed in water directly to or H₂SO₄ because

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the reaction does not go to completion.

the reaction is quite slow.

the reaction is exothermic.

SO₃ is insoluble in water.

Which element of group IV-A does not use d-orbital?

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N

P

As

Sb

Formation of NO from N₂ and O₂ requires temp

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30⁰C

300⁰C

3000⁰C

30000⁰C

Out of all the elements of group V1-A the highest melting and boiling points is shown by the element

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Te

Se

S

Pb

Tungsten and uranium are turned to an reaction with HNO₃

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Oxides

Chlorides

Nitrides

Nitrates

Colour of PCl₅is:

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Red

Yellowish White

Grey

Colourless

Sulphuric acid is used

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As fertilizers

As dehydrating agent

As oxidizing agent

All above

Calcium carbonate contains oxygen in it

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48%

50%

53%

60%

Nitrogen is present in atmosphere by weight

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75%

76%

77%

78%

Among group V-A elements, the most electronegative element is

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Sb

N

P

As

Out of all the elements of group V-A, the highest ionization energy is possessed by

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N

P

Sb

Bi

Nitrogen is present in atmosphere

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21%

36%

78%

89%

Out of all the elements of group V-A , the highest ionization energy is possessed by:

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N

P

Sb

Bi

SO₂is not absorbed in water directly to or H₂SO₄because:

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The reaction does not go to completion

the reaction is quite slow

the reaction is exothemic

SO₃is insolublein water

Nitrogen is present in atmosphere

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21%

36%

78%

89%

Group VI-A elements are called:

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Halogens

Electron deficient

alkaline earth metal

Chalcogens

Calcium carbonates contains oxygen in it:

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48%

50%

53%

60%

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ECAT Chemistry Chapter 15 Group IV-A and VI-A Elements Online Test MCQs With Answers

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