Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.

Give an example of ionisation isomerism.

Answer» COORDINATION isomerism is a form of structural isomerism in which the composition of the complex ion varies. In a coordination ISOMER the total ratio of to METAL REMAINS the same, but the ligands attached to a specific metal ion change
2.

Write the chemical formula for the complex compound: Sodium (ethylenediaminetetraacetate) chromate(II).

Answer» WRITE the chemical formula for the complex compound: Sodium (ETHYLENEDIAMINETETRAACETATE) CHROMATE(II).
3.

Why can't we feel the atmospheric pressure above us?​

Answer»

We can't feel the ATMOSPHERIC pressure because our BODY is FULL of AIR.

4.

Pbs+4H2O2-----------PbSO4+4H2O name the substance of reaction ​

Answer» TION:HOPE HELPS youreducing REACTION
5.

What is the value of X....​

Answer» PLEASE SEARCH on GOOGLE you GOT your ANSWER
6.

Write IUPAC name and identify the ligands in complex ion [Co(en)2Cl(ONO)]+.

Answer»

After naming the ligands, name the central METAL. If the COMPLEX ION is a cation, the metal is named same as the ELEMENT. For example, Co ...Explanation:Chlorido bis- (ethane - 1,2-diamine) nitrito-O- cobalt(+3) ion

7.

Write the IUPAC name of [PtCl(NH2CH3)(NH3)2]Cl. [Delhi 2011(C)]

Answer»

The IUPAC NAME of [PtCl(NH2CH3)(NH3)2]CL is Diamminechloridomethylamineplatinum(II) Chloride

8.

Write the IUPAC name of [CO(CN)2(NH3)4]Cl. [Delhi 2011(C)]

Answer»

The IUPAC NAME of [CO(en)2 (NH3)2]CL3 is Diammine bis-(ethylene diamine) cobalt(III) chloride

9.

Write the IUPAC name of [Cr(NH3)6] [Co(CN)6]. [AI 2011(C)]

Answer» HEYA MATE HERE'S UR ANSWER..The IUPAC name is HEXAAMMINE CHROMIUM HEXACYANOCOBALTATE..HOPE THIS HELPS UH☺☺
10.

Write the IUPAC name of [Pt(NH3)4Cl2]Cl2. [AI 2011(C)]

Answer»

Tetraaminedichloroplatinum(IV) tetrachloroplatinate(II)HOPE THIS ANSWER HELPED!If it does, why not MARK it as BRAINLIEST?

11.

Write the IUPAC name of [Pt(NH3)3(NO)Cl2] Br2. [Delhi 2011(C)]

Answer» WRITE the IUPAC NAME of [Pt(NH3)3(NO)Cl2] Br2.
12.

Name the coordination compound: K3[CrF6]. [Foreign 2011]

Answer» THRICE POTTASIUM HEXA FLURINE CHROMATE
13.

What is the coordination number of Fe in [Fe(EDTA)]–?

Answer» HOPE IT HELPSExplanation:In [Fe(EDTA)]  ^-  the DENTICITY of EDTA=6, so the co-ordination NUMBER =6
14.

Write IUPAC name of K3[Fe(C2O4)3]. [Delhi 2013(C)]

Answer»

IUPAC NAME of K3[Fe(C2O4)3] is Potassium trioxalato ferrate(III). this is ANSWER of your question

15.

What is the coordination number of a central ion in octahedral complex? Why does NH3 form complex but NH4+ ion does not?

Answer»

t have i,it can''t. or. PROTON ...this is the ANSWER of your QUESTION

16.

What is meant by double salt?

Answer»

that crystalizes from an aqueous solution of a MIXTURE of 2 different IONS. the mineral dolomite, is a example of DOUBLE salt . that crystallizes from a solution containing both CALCIUM and magnesium ions. double salt exist only as SOLIDS.

17.

Give one similarity and one dissimilarity between primary and secondary valences.

Answer»

Differentiate between primary and SECONDARY valencies? Primary VALENCY is EQUAL to the Oxidation number of CENTRAL ion. Secondary valency is equal to the coordination number of central metal ion

18.

Name the metal which can displace copper from copper suthhate & Supportyour answer with a word equation​

Answer»

Zinc being a more reactive element (above copper in the REACTIVITY series) than copper DISPLACES copper from its compound.hope it HELPS you...MARK it as brainliest...

19.

Which of the following metal oxides is antiferromagnetic in nature?(a) MnO2(b) TiO2(c) NO2(d) CrO2​

Answer»

AMn02 is the METAL OXIDE which is ANTIFERROMAGNETIC in NATURE .

20.

Define the law on which the balancing of chemical equation is based ​

Answer»

The no. of atoms of each element of REACTANTS are equal to no. of atoms of ELEMENTS of product is cakled the law of balancing chemical equation

21.

State the law of definite proportion. Show the constant proportion law is maintained in formation of carbon dioxide gas. by reaction of carbon and oxygen in precedence of heat​

Answer»

when CARBON react with OXYGEN then it form carbondi OXIDE but the no.of atom before the reaction and after the reaction remain same that is what LAW of constant proportion state

22.

What is superheated steam?​

Answer»

ᎻᎬY ᎷᎪᎢᎬ ᏌᎡ ᎪNᏚᏔᎬᎡ ᏆᏚSuperheated STEAM is steam at a temperature higher than its vaporization point at the absolute pressure where the temperature is measured. SUPERHEATED steam can therefore COOL by some amount, resulting in a lowering of its temperature without CHANGING state from a gas, to a mixture of saturated VAPOR and liquid.#Be Brainly....

23.

Arrange the following in order of their increasing reactivity. Alsowrite their symbol.Silver, platinum, copper, MagnesiumIron, sodium, Calcium, Aluminium,zinc, Murcury, Gold​

Answer» TION:it is your ANSWER it demands very EFFORT so at LEAST say thanks or MARK me as brainliest
24.

ग्लूकोस का एक जलीय विविवियन 10% (w/w)है विलयन की मोललता तथा विलयन मे प्रत्येक घटक का मोल _अंश क्या है?यदि विलयन का घनत्व 1.2m/L हो तो विलयन की मोलरता क्या है?

Answer»

1.2x10x5Explanation:PLEASE FOLLOW me and MARK the BRAINLEST ANSWER

25.

Which gas gas highest diffusion rate among hydrogen nitrogen methane chlorine

Answer»

ChlorineExplanation:CHLORINE has HIGHEST RATE of DIFFUSION.

26.

What is the colour of [Co(NH3)6]3+ 3Cl?

Answer»

ecobalt(111) chloridecolour : YELLOW or ORANGE CRYSTALS HOPE it helps you

27.

How many moles of AgCl will be precipitated when an excess of AgNO3 is added to a molar solution of [CrCl(H2O)5]Cl2? [Uttarakhand 2019]

Answer»

2 molesExplanation:SINCE chloride IONS outside the coordination SPHERE react with AGNO3

28.

Differentiate between a double salt and a complex. [Uttarakhand 2019]

Answer»

e salt is a salt that contains more than one cation or more than one anion. Examples of double salts include alums and Tutton's salts Other examples include potassium sodium tartrate, AMMONIUM iron(II) sulfate (Mohr's salt), and bromlite. The fluorocarbonates contain fluoride and carbonate anions. Many coordination complexes form double salts.Double salts should not be confused with complexes. When dissolved in water, a double salt completely dissociates into SIMPLE ions while a hexaaquo complex does not; the complex ion remains unchanged. Similarly, K4[YbI6] is a complex salt and contains the DISCRETE [YbI6]4− ion, which remains intact in aqueous solutions. In many cases, the complex ion is indicated by square brackets. Double salts are distinct from mixed-crystal systems where TWO salts cocrystallise. the former involves a chemical combination with fixed composition, whereas the latter is a mixture.hope it HELPS you

29.

Ni2+ forms scarlet red complex with dimethyl glyoxime. [True/False]

Answer»

I think TRUE is correct optionpls MARK me down as BRAINIEST ANSWER!!!

30.

Ca2+ and Mg2+ are removed and estimated by using EDTA from hard water. [True/False]

Answer»

I THINK false.pls MARK me down as a BRAINIEST ANSWER!!!!

31.

If ∆o > P for d4, electronic configuration in terms of CFT is _________ .

Answer»

∆p

32.

If ∆o < P for d4, electronic configuration interms of CFT is _________ .

Answer» ANSWER is ANGEL CTV OKAY
33.

In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices. (a) Assertion and reason both are hue, reason is correct explanation of assertion. (b) Assertion and reason both are true but reason is not the correct explanation of assertion. (c) Assertion is true, reason is false. Assertion: Toxic metal ions are removed by the chelating ligands. [NCERT Exemplar] Reason: Chelate complexes tend to be more stable.

Answer» CORRECT ANSWER is assertion is true,REASON is false
34.

An aqueous pink solution of cobalt(II) chloride changes to deep blue on addition of excess of HC1. This is because _________ . [NCERT Exemplar] (a) [Co(H2O)6]2+ is transformed into [CoCl6]4- (b) [Co(H2O)6]2+ is transformed into [CoCl4]2- (c) tetrahedral complexes have smaller crystal field splitting than octahedral complexes. (d) tetrahedral complexes have larger crystal field splitting than octahedral complex.

Answer» ANSWER is in the PHOTOGRAPH
35.

Identify the optically active compounds from the following: ]NCERT Exemplar] (a) [Co(en)3]3+ (b) trans- [Co(en)2 Cl2]+ (c) cis- [Co(en)2 Cl]+ (d) [Cr (NH3)5Cl]

Answer»

(a) &(C) are CORRECT.....

36.

Which of the following options are correct for [Fe(CN)6]3- complex? [NCERT Exemplar] (a) d²sp3 hybridisation (b) sp3cf hybridisation (c) paramagnetic (d) diamagnetic

Answer» TION:(a)&(C) is CORRECT.........
37.

Atomic number of Mn, Fe, Co and Ni i are 25, 26, 27 and 28 respectively. Which of the following outer orbital octahedral ’complexes have same number of unpaired electrons? [NCERT Exemplar] (a) [MnCl6]3- (b) [FeF6]3- (c) [CoF6]3- (d) [Ni(NH3)6]2+

Answer» BECOZ of FE anomalus CONFIGURATION HOPE it HELPS you
38.

Give reason: a. We need to be careful while diluting acid.b. Blue colored copper sulphate fades when it is heated.c. After bee sting we need to apply baking powder.​

Answer»

Because diluting an ACID is a HIGHLY exothermic reaction. It may cause the mixture to splash out.....Blue coloured copper sulphate (CuSO4. 5H2O) loses water MOLECULES when heated and it becomes COLOURLESS.....Bee sting is an acidic ACTION and may cause irrition, applying baking soda which is a mild base may neutralises the acid and provides relief.....

39.

19. A compound which is prepared from gypsum has a property of hardening when mixed with water. I identify the compound and write its chemical formula. Write the chemical equation for its preparation. Mention any one use of the compound.​

Answer»

d had on its PREPARATION

40.

Compound A which is used in white washing when mixed with water to form compound B which is used to find the presence of CO2. When compound B reacts with CO2 to form compound C which gives white shinny nature. a. Identify compound A, B & C.b. Mention the reactions involved.​

Answer»

a. compound A is CAO ( Quick lime)compound B is CA(OH)2 (SLAKED lime)compound C is CACO3 ( Calcium Carbonate)b. COMBINATION reaction is involved.. CaO + H2O ➡️ Can(OH)2 + heat

41.

3. A compound contains 92.9% carbon and 7.17% hydrogen. It's molecular mass is 78 μ. Determine its molecular formula. 4. Upon analysis, a compound is found to contain 33% silicon and 67% fluorine. It's molecular mass is 170 μ. Determine its molecular formula.​

Answer»

molecules are lightly packed in HYDROGEN so it is QUITE SURE it will be 67% flouride and molecular mass 170

42.

Describe the separation and estimation of iron and calcium in a mixture using relevant equational​

Answer»

SearchCSE LogoDEPARTMENT OF CHEMISTRYSeparation of Sand, Iron, and SaltThe components of a mixture are separated based on their physical properties.Equipmentflask for combining the components in watermagnetfliter flask, FUNNEL and filter paperhot plateevaporating dishReagentssandiron filingssodium chloridewaterPresentationThe three components are shown in their pure states, then COMBINED into the water to form a heterogeneous mixture. The salt dissolves, the other solids do not.Using the fact that the iron is magnetic, the magnet can be used to separate the iron FILLINGS from the mixture by moving TEH magnet around in the container. Keeping the magnet in a plastic bag MAKES it easy to separate the filings from the magnet when you pull it out.The sand can then be separated by passing the remaining mixture through the filter paper.The salt can be separated from the supernatant by pouring some into the evaporating dish on a hot plate and evaporating the water.DetailsThe underlying message of the demo is that the physical properties of the components of a mixture can be used to separate them from the mixture. This is a simple but important concept that we use in many chemical analysis and synthesis techniques.SafetyhotSpecial Safety Noteshot plate is hot during evaporation stepseparation1Iron, sand, and salt prior to mixing.separation2The collection of materials used in the demo.please mark it as brainlist

43.

Compound A which is used in white washing when mixed with water to form compound B which is used to find the presence of CO2. When compound B reacts with CO2 to form compound C which gives white shinny nature.​

Answer»

compound A is CaO ( Quick LIME) compound B is CA(OH)2 ( Slaked lime)compound C is CACO3 ( Calcium Carbonate)

44.

. In the electrolysis of water: a. Name the gas collected at anode and cathode.b. Why is the gas collected at one electrode is double than the other.c. Why Dil. H2SO4 is added during the electrolysis of water.​

Answer»

i don,t knowExplanation:

45.

A high polymer of vinyl chloride?? Please answer correctly..

Answer» TION:that is PVCpoly VINYL CHLORIDE
46.

Name the solid product obtained when Agcl is exposed to sunlight ​

Answer»

tion:When silver chloride(AgCl) is EXPOSED to sunlight it get DECOMPOSED into silver and CHLORINE itself. This type of decomposition CAUSED by the sunlight is called photolytic decomposition. 2AgCl ----------------- 2Ag +Cl2.

47.

What is water of crystallization? What will happen to the gypsum when it is heated at 373K? What are the uses of Plaster of Paris?​

Answer»

crystalization help us to get the solid FORM of any substance from the liquid form.when gypsum is HEATED it will TURN into solid form.plaster of paris USE in different things LIKE sometime to make hard cooking utensils alsohope this will help you

48.

Why can LPG gas filled in cylinders

Answer» LPG is a mixture of propane and butane. These are gases at normal temperatures and pressure. However if pressure is increased to approximately 8 times the atmospheric pressure, these gases turned into liquid and the QUANTITY of storage in the same volume increases enormously. HENCE these are called Liquefied PETROLEUM GAS.
49.

The name of complex [Fe(CN)6]3- is (a) Tricyanido ferrate (III) ion (b) Hexacyanido ferrate (III) ion (c) Hexacyanido iron (III) (d) Hexacyanido ferrate (II) ion

Answer»

(d) Hexacyanido FERRATE

50.

Note: In the following questions two or more options may be correct. (Q.21 to Q.25) Atomic number of Mn, Fe and Co are 25,26 and 27 respectively. Which of the following inner orbital octahedral complex ions are diamagnetic? [NCERT Exemplar] (a) [CO(NH3)6]3+ (b) [Mn(CN)]3- (c) [Fe(CN)6]4- (d) [Fe(CN)6]3-

Answer»

Step-by-sStep-by-step explanation: I DONT KNOW THIS I AM ONLY IN 5TH PLKS ALSO MARK AS BRAINLIESTtep explanation: SRRY for caps i dont know thisExplanation: