8881 + Interview Questions in Chemistry in Class 10 Page 84 InterviewSolution

4151.	Name the element which is next to carbon according to catenation property.
Answer» SOLUTION :SULPHUR

Discussion

4152.	Name the element which has twice as many electrons in its second shell as in its first shell. Write its electronic configuration also.
Answer» Solution :The ELEMENT is carbon. It has a TOTAL number of 6 ELECTRONS, 2 in the FIRST shell and 4 in the second shell. Electronic configuration : `{:(K,L),(2,4):}`

Discussion

4153.	Name the element which belongs to group 17 and period 2 of the modern periodic table.
Answer» SOLUTION :FLUORINE

Discussion

4154.	Name the element which exhibit diagonal relationship with Be.
Answer» ANSWER :`AL`

Discussion

4155.	Name the element and its valency which is having electronic configuration 2, 8, 3.
Answer» Solution :The NAME of the element is Aluminium (Al). Its VALENCY is +3.

Discussion

4156.	Name the constituents of the following alloys : (i) Brass (ii) Stainless steel (iii) Bronze, State one property in each of these alloys, which is different from its main constituents.
Answer» Solution :(i) Brass : copper and zinc (ii) Stainless STEEL : iron, NICKEL and chromium (iii) Bronze : copper and tin. brass and bronze have lower ELECTRICAL CONDUCTIVITY than their constituents. Stainless steel does not corrode easily as iron does.

Discussion

4157.	Name the covalent bond formed by axial overlapping of atomic orbitals.
Answer» SOLUTION :SIGMA BOND

Discussion

4158.	Name the constitutent metals of bronze.
Answer» SOLUTION :BRONZE is MADE up of COPPER and TIN.

Discussion

4159.	Name the constituents of baking powder.
Answer» SOLUTION :SODIUM HYDROGENCARBONATE and POTASSIUM hydrogentarte.

Discussion

4160.	Name the constituents of duralumin. What are the uses of this alloy?
Answer» Solution :Aluminium, copper, MANGANESE and MAGNESIUM. The alloy is used in (i) MAKING airplane parts and (ii) pressure COOKERS .

Discussion

4161.	Name the compound of sodium which loses its water of crystallization when exposed to air.
Answer» Solution :Sodium CARBONATE decahydrate ` (Na_(2)CO_(3). 10H_(2)O)`

Discussion

4162.	Name the compound of sodium which is used to make borax and glass.
Answer» Solution :Sodium CARBONATE `(Na_(2)CO_(3).10H_(2)O)`

Discussion

4163.	Name the compound having the formulaCH_3 - CH_2 - CH_2 - underset(CH_3) underset(\|) overset(CH_3) overset(\|) C-CH_3
Answer» Solution : IUPAC parts of the complete name of the STRUCTURAL formula: ROOT word, Primary suffix, Secondary suffix, Prefix. (i) There are 5 C atoms in the continuous chain. Therefore, root word = pent. (ii) Only C-C covalent bonds are present in the chain. Therefore, primary suffix is ane. (III) There is no functional group with the parent chain. Therefore, secondary suffix is not involved. (iv) There are two substituent of METHYL radicals `(-CH_3)` on carbon 2. Therefore, prefix is 2,2-dimethyl. Thus the IUPAC name of the given compound is derived as:

Discussion

4164.	Name the compound CH_3 - CH_2- CH_2 - CH_3
Answer» SOLUTION :`CH_3 - CH_2 -CH_2 - CH_3` is N - BUTANE

Discussion

4165.	Name the common element which is present in all acids .
Answer» SOLUTION :HYDROGEN.

Discussion

4166.	Name the chemical which is injected into the skin of a person : (a) During an ant's sting (b) During the nettle leaf sting.
Answer» SOLUTION :(a) FORMIC ACID (B) Methanoic acid

Discussion

4167.	Name the chemical reagent which oxidises ethanol to ethanoic acid.
Answer» SOLUTION :ACIDIFIED POTASSIUM DICHROMATE.

Discussion

4168.	Name the change takes place.Which two industries are based on the use of washing soda ?
Answer» SOLUTION :Dehydration takes place and we GET anhydrous salt, sodium carbonate is used in (a) In GLASS industry (b) In PAPER industry

Discussion

4169.	Name the cations given by an acid in aqueous solution.
Answer» SOLUTION :HYDROGEN ion `[H^(+)(aq)]` or hydronium ion `(H_(3)O^(+)orOH_(3)^(+))`

Discussion

4170.	Name the compound formed where ethanol is heated is excess of concentrated sulphuric acid at 443 K. Also write the chemical equation of the reaction stating the role of concentrated sulphuric acid in it. What would happen if hydrogen is added to the product of this reaction in the presence of a catalyst such as potassium or nickel?
Answer» Solution :`CH_(3)CH_(2)OH` ,ethanol `underset("Ethanol")(CH_(3)CH_(2)OH) underset(443K) overset(conc.H_(2)SO_(4))to underset("ETHENE")(CH_(2)=CH_(2)+H_(2)O)`

Discussion

4171.	Name the calorimeter used to measure Delta U.
Answer» SOLUTION :BOMB CALORIMETER

Discussion

4172.	Name the brown fumes liberated when lead nitrate is heated. Write the balanced chemical equation for this reaction.
Answer» SOLUTION :Nitrogen DIOXIDE `(NO_(2))` `2Pb(NO_(3))_(2) RARR 2PbO+4NO_(2)+O_(2)`

Discussion

4173.	Name the bases NaOH, KOH, and NH_(4)OH.
Answer» SOLUTION :NaOH = SODIUM hydroxide, KOH = POTASSIUM hydroxide, `NH_(4)OH` = Ammonium hydroxide

Discussion

4174.	Name the anode,the cathode and the electrolyte used in the electrolytic refining of impure copper.
Answer» Solution :ANODE- Impure copper CATHODE- Strip of PURE copper ELECTROLYTE- ACIDIFIED copper sulphate solution.

Discussion

4175.	Name the alloy whose constituents are iron, nickel and chromium.
Answer» SOLUTION :STAINLESS STEEL

Discussion

4176.	Name the alchol which is a constituent of wine and beer.
Answer» SOLUTION :ETHANOL

Discussion

4177.	Name the acids present in the following foodstuffs which attribute a sour taste to them : Lemon juice, vinegar, vitamin C tablet, tamarind, sour milk, orange
Answer» Solution :Lemon juice contains citric ACID. Vinegar contains ACETIC acid. Vitamin C TABLET contains ascorbic acid. Tamarind contains TARTARIC acid. Sour milk contains lactic acid. Orange contains citric acid.

Discussion

4178.	Name the acids present in (i) nettle sting (ii) curd.
Answer» SOLUTION :The ACIDS PRESENT are as under : Nettle sting - Methanoic ACID Curd – LACTIC acid

Discussion

4179.	Name the acids present in (i) Tomato (ii) Vinegar (iii) Tamarind.
Answer» SOLUTION :(i) In TOMATO - Oxalic acid (i) In Vinegar = Acetic acid (ii) In TAMARIND - TARTARIC acid.

Discussion

4180.	Name the acid that renders aluminium passive. Why ?
Answer» Solution :DILUTE or concentrated nitric ACID (HNO.) renders aluminium passive. Because nitric acid does not attack aluminium but it renders aluminium passive due to the formation of an oxide film on its surface.

Discussion

4181.	Name the acid present in vinegar.
Answer» SOLUTION :ETHANOIC ACID.

Discussion

4182.	Name the acid present in the stinging hairs of nettle leaves.
Answer» SOLUTION :Methanoic ACID.

Discussion

4183.	Name the acid present in ant sting and give its chemical formula. Also give the common method to get relief from the discomfort caused by the ant sting.
Answer» Solution :The ACID present in ant STING is methanoic acid (formic acid). The chemical FORMULA is HCOOH. TO get RELIEF one should apply any available basic salt e.g., baking soda `(NaHO_(3))` on it.

Discussion

4184.	Name the acid present in an ant sting and give its chemicalformula . Also give the common method to get relief from the discomfort caused by the ant sting.
Answer» Solution :The acid present in an ant STING is methanoic acid (FORMIC acid). The chemical FORMULA is HCOOH. To get relief, one should apply any available BASIC salt, .e.g. baking soda `(NaHCO_3)` on it.

Discussion

4185.	Name the acid present in the following: (i) Tomato (ii) Vinegar (iii) Tamarind
Answer» Solution :Tomato: Malic acid and citric acid (ii) VINEGAR: ACETIC acid (III) TAMARIND: TARTARIC acid and citric acid

Discussion

4186.	Name the acid present in ant sting
Answer» SOLUTION :FORMIC ACID (Methanoic acid) HCOOH.

Discussion

4187.	Name one synthetic antioxidant.
Answer» SOLUTION :Butylated hydroxyanisole (BHA).

Discussion

4188.	Name one salt whose solution has pH more than 7 and one salt whose solution has pH less than 7.
Answer» Solution :Salts of WEAK acid and strong base give a solution which have PH more than 7. SODIUM acetate is an EXAMPLE of such salts. Salts of strong acid and weak base give a solution which has pH less than 7. Ammonium CHLORIDE is an example of such salts.

Discussion

4189.	Name one other element for each which is in the same group as (i) carbon (ii) fluorine (iii) sodium
Answer» SOLUTION :(i) Silicon (ii) CHLORINE (III) POTASSIUM

Discussion

4190.	Name one metal which reacts with very dilute HNO_3to evolve hydrogen gas.
Answer» SOLUTION :MAGNESIUM and MANGANESE.

Discussion

4191.	Name one metal and one non-metal which exist in the liquid state at room temperature.
Answer» SOLUTION :METAL : MERCURY, Non-metal : BROMINE

Discussion

4192.	Name one metal and one non metal that exist in liquid state at room temperature. Also name two metals having melting point less than 310 K(37^@C).
Answer» Solution :Metal: Mercury (Hg), Non metal: Bromine (Br) Two metals with melting points LESS than 310 K are Cesium (CS) and Gallium (GA).

Discussion

4193.	Name one metal and non-metal which exists in liquid state at room temperature ?
Answer» SOLUTION :METAL - MERCURY, Non-metal - BROMINE.

Discussion

4194.	Name one metal each which is extracted by : (i) Reduction with carbon (ii) Electrolytic reduction (iii) Reduction with aluminium (iv) Reduction with heat alone
Answer» SOLUTION :(i) ZINC (ii) ALUMINIUM (iii) Maganese (IV) MERCURY

Discussion

4195.	Name of type of chemical reaction represented by the following equation :(iii) 2FeSO_4 overset("Heat") rarr Fe_2O_(3)+SO_(2)+SO_(3)
Answer» SOLUTION :DECOMPOSITION REACTION

Discussion

4196.	Name of type of chemical reaction represented by the following equation :(ii) 3BaCl_(2) + Al_(2)(SO_4)_3 rarr 2Al Cl_(3) + 3BaSO_4
Answer» SOLUTION :DOUBLE DISPLACEMENT REACTION.

Discussion

4197.	Name of type of chemical reaction represented by the following equation : (i) CaO+H_(2)O rarr Ca(OH)_2
Answer» SOLUTION :COMBINATION REACTION

Discussion

4198.	Name the substance which on treatment with chlorine yields bleaching powder.
Answer» Solution :Calcium HYDROXIDE `[Ca(OH)_2]`

Discussion

4199.	Name of the following The property of elements by virtue of which atoms of the element can link to each other in the form of a long chain or ring structure
Answer» SOLUTION :CATENATION

Discussion

4200.	Name of the following Reaction when an alkyl halide is treated with alcoholic potassium hydroxide.
Answer» SOLUTION :DEHALOGENATION

Discussion

Explore topic-wise InterviewSolutions in .

Name the element which is next to carbon according to catenation property.

Name the element which has twice as many electrons in its second shell as in its first shell. Write its electronic configuration also.

Name the element which belongs to group 17 and period 2 of the modern periodic table.

Name the element which exhibit diagonal relationship with Be.

Name the element and its valency which is having electronic configuration 2, 8, 3.

Name the constituents of the following alloys : (i) Brass (ii) Stainless steel (iii) Bronze, State one property in each of these alloys, which is different from its main constituents.

Name the covalent bond formed by axial overlapping of atomic orbitals.

Name the constitutent metals of bronze.

Name the constituents of baking powder.

Name the constituents of duralumin. What are the uses of this alloy?

Name the compound of sodium which loses its water of crystallization when exposed to air.

Name the compound of sodium which is used to make borax and glass.

Name the compound having the formulaCH_3 - CH_2 - CH_2 - underset(CH_3) underset(|) overset(CH_3) overset(|) C-CH_3

Name the compound CH_3 - CH_2- CH_2 - CH_3

Name the common element which is present in all acids .

Name the chemical which is injected into the skin of a person : (a) During an ant's sting (b) During the nettle leaf sting.

Name the chemical reagent which oxidises ethanol to ethanoic acid.

Name the change takes place.Which two industries are based on the use of washing soda ?

Name the cations given by an acid in aqueous solution.

Name the calorimeter used to measure Delta U.

Name the brown fumes liberated when lead nitrate is heated. Write the balanced chemical equation for this reaction.

Name the bases NaOH, KOH, and NH_(4)OH.

Name the anode,the cathode and the electrolyte used in the electrolytic refining of impure copper.

Name the alloy whose constituents are iron, nickel and chromium.

Name the alchol which is a constituent of wine and beer.

Name the acids present in the following foodstuffs which attribute a sour taste to them : Lemon juice, vinegar, vitamin C tablet, tamarind, sour milk, orange

Name the acids present in (i) nettle sting (ii) curd.

Name the acids present in (i) Tomato (ii) Vinegar (iii) Tamarind.

Name the acid that renders aluminium passive. Why ?

Name the acid present in vinegar.

Name the acid present in the stinging hairs of nettle leaves.

Name the acid present in ant sting and give its chemical formula. Also give the common method to get relief from the discomfort caused by the ant sting.

Name the acid present in an ant sting and give its chemicalformula . Also give the common method to get relief from the discomfort caused by the ant sting.

Name the acid present in the following: (i) Tomato (ii) Vinegar (iii) Tamarind

Name the acid present in ant sting

Name one synthetic antioxidant.

Name one salt whose solution has pH more than 7 and one salt whose solution has pH less than 7.

Name one other element for each which is in the same group as (i) carbon (ii) fluorine (iii) sodium

Name one metal which reacts with very dilute HNO_3to evolve hydrogen gas.

Name one metal and one non-metal which exist in the liquid state at room temperature.

Name one metal and one non metal that exist in liquid state at room temperature. Also name two metals having melting point less than 310 K(37^@C).

Name one metal and non-metal which exists in liquid state at room temperature ?

Name one metal each which is extracted by : (i) Reduction with carbon (ii) Electrolytic reduction (iii) Reduction with aluminium (iv) Reduction with heat alone

Name of type of chemical reaction represented by the following equation :(iii) 2FeSO_4 overset("Heat") rarr Fe_2O_(3)+SO_(2)+SO_(3)

Name of type of chemical reaction represented by the following equation :(ii) 3BaCl_(2) + Al_(2)(SO_4)_3 rarr 2Al Cl_(3) + 3BaSO_4

Name of type of chemical reaction represented by the following equation : (i) CaO+H_(2)O rarr Ca(OH)_2

Name the substance which on treatment with chlorine yields bleaching powder.

Name of the following The property of elements by virtue of which atoms of the element can link to each other in the form of a long chain or ring structure

Name of the following Reaction when an alkyl halide is treated with alcoholic potassium hydroxide.