S and P block Test 17

Total Questions:50 Total Time: 75 Min

Remaining:

 

Questions 1 of 50

Question:Potassium is kept in

Answers Choices:

Alcohol

Water

Kerosene

Liquid ammonia

Questions 2 of 50

Question:Sodium metal can be stored under

Answers Choices:

Benzene

Kerosene

Alcohol

Toluene

Questions 3 of 50

Question:Which of the following is the smallest cation

Answers Choices:

\(N{a^ + }\)

\(M{g^{ + 2}}\)

\(C{a^{ + 2}}\)

\(A{l^{ + 3}}\)

Questions 4 of 50

Question:Which of the following statement about LiCl and \(NaCl\) is correct

Answers Choices:

LiCl has higher melting point than NaCl

LiCl dissolves in water whereas NaCl does not

LiCl would ionize in water more than NaCl

Fused LiCl would be less conducting than fused NaCl

Questions 5 of 50

Question:Which metal forms amide with \(N{H_3}\) at \({300^o}C\)

Answers Choices:

\(Mg\)

\(Pb\)

\(Al\)

\(Na\)

Questions 6 of 50

Question:A substance X is a compound of an element of group IA the substance X gives a violet colour in flame test, X is

Answers Choices:

\(LiCl\)

\(NaCl\)

\(KCl\)

None

Questions 7 of 50

Question:A solid compound 'X' on heating gives \(C{O_2}\) gas and a residue. The residue mixed with water forms 'Y'. On passing an excess of \(C{O_2}\)through 'Y' in water, a clear solution, 'Z' is obtained. On boiling 'Z', compound 'X' is reformed. The compound 'X' is

Answers Choices:

\(N{a_2}C{O_3}\)

\({K_2}C{O_3}\)

\(Ca{(HC{O_3})_2}\)

\(CaC{O_3}\)

Questions 8 of 50

Question:\(NaOH\) is manufactured by electrolysis of brine solution. The products of the reaction are

Answers Choices:

\(C{l_2}\) and \({H_2}\)

\(C{l_2}\) and \(Na - Hg\)

\(C{l_2}\) and \(Na\)

\(C{l_2}\) and \({O_2}\)

Questions 9 of 50

Question:\(Na\) imparts yellow colour to Bunsen flame because of

Answers Choices:

Low ionisation potential

Sensitivity

Sublimation

Absorbed high radiation

Questions 10 of 50

Question:Which of the following is most reducing agent

Answers Choices:

\(HN{O_3}\)

\(Na\)

\(C{l_2}\)

\(Cr\)

Questions 11 of 50

Question:Of the metals \(Be,\) \(Mg,\) \(Ca\) and \(Sr\) of group II A. In the periodic table the least ionic chloride would be formed by

Answers Choices:

\(Be\)

\(Mg\)

\(Ca\)

\(Sr\)

Questions 12 of 50

Question:Magnesia is

Answers Choices:

\(MgC{O_3}\)

\(MgO\)

\(MgS{O_4}\)

\(MgC{l_2}\)

Questions 13 of 50

Question:Which of the following ions forms highly soluble hydroxide in water

Answers Choices:

\({K^ + }\)

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

\(A{l^{ + + + }}\)

\(C{a^{ + + }}\)

Questions 14 of 50

Question:Which of the following substances is used in the laboratory for fast drying of neutral gases

Answers Choices:

Sodium phosphate

Phosphorus pentoxide

Sodium sulphate

Anhydrous calcium chloride

Questions 15 of 50

Question:Which one of the following is the strongest base

Answers Choices:

\(Be{\left( {OH} \right)_2}\)

\(Mg{\left( {OH} \right)_2}\)

\(Al{\left( {OH} \right)_3}\)

\(Si{\left( {OH} \right)_4}\)

Questions 16 of 50

Question:A certain metal M is used to prepare an antacid, which is used as a medicine in acidity. This metal accidently catches fire which can not be put out by using \(C{O_2}\) based extinguishers. The metal M is

Answers Choices:

\(Ca\)

C

Mg

All of these

Questions 17 of 50

Question:Mg burns in CO to produce

Answers Choices:

\(Mg{O_2}\)

\(MgC{O_3}\)

\(MgO + CO\)

\(MgO + C\)

Questions 18 of 50

Question:When orthoboric acid \(({H_3}B{O_3})\) is heated, the residue left is

Answers Choices:

Metaboric acid

Boron

Boric anhydride

Borax

Questions 19 of 50

Question:Hydrogen gas will not reduce

Answers Choices:

Heated cupric oxide

Heated ferric oxide

Heated stannic oxide

Heated aluminium oxide

Questions 20 of 50

Question:Aluminium oxide is not reduced by chemical reactions since

Answers Choices:

Aluminium oxide is reactive

Reducing agents contaminate

Aluminium oxide is highly stable

The process pollutes the environment

Questions 21 of 50

Question:In the commercial electrochemical process for aluminium extraction, the electrolyte used is

Answers Choices:

\(Al{(OH)_3}\) in \(NaOH\) solution

An aqueous solution of \(A{l_2}{(S{O_4})_3}\)

A molten mixture of \(A{l_2}{O_3}\) and \(N{a_3}Al{F_6}\)

A molten mixture of \(AlO(OH)\) and \(Al{(OH)_3}\)

Questions 22 of 50

Question:\(Pb{O_2}\) is

Answers Choices:

Basic

Acidic

Neutral

Amphoteric

Questions 23 of 50

Question:Which of the following is insoluble in water

Answers Choices:

\(N{a_2}C{O_3}\)

\(CaC{O_3}\)

\(ZnC{O_3}\)

\(A{l_2}{(C{O_3})_3}\)

Questions 24 of 50

Question:\({H_2}{O_2}\) on reaction with PbS gives

Answers Choices:

\(PbO\)

\(PbS{O_4}\)

\(Pb{O_2}\)

\(PbHS{O_4}\)

Questions 25 of 50

Question:White lead is

Answers Choices:

\(PbC{O_3}\)

\(PbC{O_3}.PbO\)

\(2PbC{O_3}.\,Pb{(OH)_2}\)

\(2PbS{O_4}.PbO\)

Questions 26 of 50

Question:Which of the following element is a metalloid

Answers Choices:

Bi

Sn

Ge

C

Questions 27 of 50

Question:Among the following nitrates, Lead nitrate, Silver nitrate and Ammonium nitrate; the one that decomposes without leaving any solid residue is

Answers Choices:

Lead nitrate

Ammonium nitrate

Silver nitrate

Sodium nitrate

Questions 28 of 50

Question:Ammonium dichromate on heating gives

Answers Choices:

Chromium oxide and ammonia

Chromic acid and nitrogen

Chromium oxide and nitrogen

Chromic acid and ammonia

Questions 29 of 50

Question:In the catalytic oxidation of ammonia an oxide is formed which is used in the preparation of \(HN{O_3}\). This oxide is

Answers Choices:

\({N_2}{O_5}\)

\({N_2}{O_4}\)

\(N{O_2}\)

\(NO\)

Questions 30 of 50

Question:Which of the following is not hydrolysed

Answers Choices:

\(AsC{l_3}\)

\(P{F_3}\)

\(SbC{l_3}\)

\(N{F_3}\)

Questions 31 of 50

Question:In the reaction \(HCOOHCO + {H_2}O\);\({H_2}S{O_4}\)acts as

Answers Choices:

Dehydrating agent

Oxidising agent

Reducing agent

All of these

Questions 32 of 50

Question:Which of the following is the best scientific method to test presence of water in a liquid

Answers Choices:

Taste

Smell

Use of litmus paper

Use of anhydrous copper sulphate

Questions 33 of 50

Question:The catalyst used in the manufacture of \({H_2}S{O_4}\) by contact process is

Answers Choices:

\(A{l_2}{O_3}\)

\(C{r_2}{O_3}\)

\({V_2}{O_5}\)

\(Mn{O_2}\)

Questions 34 of 50

Question:In presence of moisture, \(S{O_2}\) can

Answers Choices:

Act as oxidant

Lose electron

Gain electron

Not act as reductant

Questions 35 of 50

Question:The solubility of iodine in water increases in the presence of

Answers Choices:

Alcohol

Chloroform

Sodium hydroxide

Potassium iodide

Questions 36 of 50

Question:On boiling an aqueous solution of \(KCl{O_3}\) with iodine, the following product is obtained

Answers Choices:

\(KI{O_3}\)

\(KCI{O_4}\)

\(KI{O_4}\)

\(KCl\)

Questions 37 of 50

Question:In \(KI\) solution, \({I_2}\) readily dissolves and forms

Answers Choices:

\({I^ - }\)

\(K{I_2}\)

\(KI_2^ - \)

\(K{I_3}\)

Questions 38 of 50

Question:Mark the element which displaces three halogens from their compounds

Answers Choices:

\(F\)

\(Cl\)

\(Br\)

\(I\)

Questions 39 of 50

Question:Euchlorine is a mixture of

Answers Choices:

\(C{l_2}\) and \(S{O_2}\)

\(C{l_2}\) and \(Cl{O_2}\)

\(C{l_2}\) and \(CO\)

None of these

Questions 40 of 50

Question:\(HBr\) and \(HI\) reduce sulphuric acid, \(HCl\) can reduce \(KMn{O_4}\) and \(HF\) can redu

Answers Choices:

\({H_2}S{O_4}\)

\(KMn{O_4}\)

\({K_2}C{r_2}{O_7}\)

None of these

Questions 41 of 50

Question:The bleaching action of the bleaching powder is due to the liberation of

Answers Choices:

Chlorine

Molecular oxygen

Nascent oxygen

Calcium carbonate

Questions 42 of 50

Question:Bleaching action of chlorine is due to

Answers Choices:

Oxidation

Reduction

Hydrolysis

Its acidic nature

Questions 43 of 50

Question:When iodine reacts with \(NaF,\) \(NaBr\) and \(NaCl\)

Answers Choices:

It gives mixture of \({F_2},\) \(C{l_2}\) and \(B{r_2}\)

It gives chlorine

It gives bromine

None of these

Questions 44 of 50

Question:Which is not oxidised by \(Mn{O_2}\)

Answers Choices:

F

Cl

\({I_2}\)

\(I\)

Questions 45 of 50

Question:Unlike other halogens fluorine does not show higher oxidation states because

Answers Choices:

It is highly electronegative

It has no d-orbitals

Its atomic radius is very small

The \({F^ - }\) ion is stable and isoelectronic with neon

Questions 46 of 50

Question:The reaction of the type \(2{X_2} + S \to S{X_4}\)is shown by sulphur when X is

Answers Choices:

Fluorine or chlorine

Chlorine only

Chlorine and bromine only

\(F,\;Cl,\;Br\) all

Questions 47 of 50

Question:Every inert gas atom

Answers Choices:

Has a saturated outermost shell

Has one electron in outermost shell

Has eight electrons in outermost shell

Has two electrons in outermost shell

Questions 48 of 50

Question:In \(Xe{F_2}\) hybridisation of \(Xe\) is

Answers Choices:

\(s{p^2}\)

\(s{p^3}d\)

\(s{p^3}\)

\(s{p^3}{d^2}\)

Questions 49 of 50

Question:Which of the following noble gas does not have an octet of electrons in its outermost shell

Answers Choices:

Neon

Radon

Argon

Helium

Questions 50 of 50

Question:Which inert gas having highest boiling point

Answers Choices:

Xe

Ar

Kr

He