8881 + Interview Questions in Chemistry in Class 10 Page 82 InterviewSolution

4051.	Name the reaction which forms insoluble salts.
Answer» SOLUTION :PRECIPITATION REACTION

Discussion

4052.	Write chemical equations of the reactions of ethanoic acid withEthanol in the presence of conc. H_2SO_4
Answer» Solution :The REACTION is CALLED esterification and the PRODUCT is ESTER.

Discussion

4053.	Name the reaction observed during rancidity of food.
Answer» SOLUTION :OXIDATION

Discussion

4054.	Name the reaction in which two compounds exchange their ions to form two new compounds.
Answer» SOLUTION :DOUBLE DISPLACEMENT REACTION

Discussion

4055.	Name the property which all the elements of group 13 have in common.
Answer» SOLUTION :Each element of group 13 has THREE ELECTRONS in its outermost shell.

Discussion

4056.	Name the property used to measure the degree of polarity.
Answer» SOLUTION :DIPOLE MOMENT

Discussion

4057.	Name the property of ethyne which makes it useful for cutting and welding of steel.
Answer» SOLUTION :HIGH HEAT of COMBUSTION

Discussion

4058.	Name the property common to all the elements of the group in which fluorine is placed.
Answer» Solution :Each element of this group has SEVEN VALENCE electrons.

Discussion

4059.	Name the products of chlor-alkali process. Write one use of each.
Answer» Solution :The products of chlor-alkali process are Sodium hydroxide (NaOH), CHLORINE `(Cl_(2))` and Hydrogen `(H_(2))`. Uses of these are : (i) NaOH - for soaps and detergents and paper MAKING or artificial fibres. (ii) `Cl_(2)` - PVC, pesticides, CFCS. (iii) `H_(2)` - fuels, manufacture of `NH_(3)` for fertilizers

Discussion

4060.	Name the products obtained when zinc blende is roasted .
Answer» SOLUTION :ZINC OXIDE (ZNO)

Discussion

4061.	Name the products obtained when limestone is calcined.
Answer» SOLUTION :CALCIUM OXIDE (CAO)

Discussion

4062.	Name the products formed when an acid reacts with a base.
Answer» SOLUTION :SALT and WATER .

Discussion

4063.	Name the products formed when ethanoic acid reacts with a sodium hydrogen carbonate.
Answer» ANSWER :SODIUM ethanoate, CARBON DIOXIDE and WATER.

Discussion

4064.	Name the product formed, when silver bromide is exposed to sunlight.
Answer» SOLUTION :SILVER and BROMINE

Discussion

4065.	Namethe product formed when magnesium burns in air ?
Answer» SOLUTION :MAGNESIUM OXIDE.

Discussion

4066.	Name the product formed when hydrogen is burnt in air.
Answer» SOLUTION :water is FORMED when hydrogen is BURNT in AIR .

Discussion

4067.	Name the product formed when acetic acid is treated with sodium hydroxide solution .
Answer» Solution :SODIUM acetate `(CH_(3)COONa)` and WATER ` (H_(2)O)`

Discussion

4068.	Name the process . Ore heatedin the presenceof excess of air .
Answer» SOLUTION :ROASTING .

Discussion

4069.	Name the process . Ore heatedin the absence of air .
Answer» SOLUTION :CALCINATION

Discussion

4070.	Name the process of converting vegetable oil to vegetable ghee.
Answer» SOLUTION :HYDROGENATION.

Discussion

4071.	Name the process by which unsaturated fats are changed to saturated fats.
Answer» SOLUTION :HYDROGENATION.

Discussion

4072.	Name the phenomenon associated with the use of (i) CFC (ii) DDT
Answer» SOLUTION :i) OZONE denpletion II) BIOMAGNIFICATION

Discussion

4073.	Name the phenomena used to describe a molecule whose single Lewis structure cannot describe it.
Answer» SOLUTION :RESONANCE

Discussion

4074.	Name the part of the eye where image is formed by the eye lens. What is the nature of the image formed ? How is their sent to the brain ?
Answer» Solution :The image of the OBJECT FORMED by the eye lens is at the retina of the eye. The image formed on the retina is real and inverted the image is sent to the BRAIN with the help of the optic NERVE.

Discussion

4075.	Name the periodic properties and why are they called so ?
Answer» SOLUTION :PROPERTIES such as atomic radius, ionic radius, ioniation energy , ELECTRO negativity , , eelctron affinity show a regularperiodicity and HENCE they are called PERIODIC properties.

Discussion

4076.	Name the oxidising and reducing agent in the following reaction: 2H_(2)S+SO_(2)rarr2H_(2)O+3Sdarr
Answer» Solution :`H_(2)S` is the reducing AGENT while `SO_(2)` is the OXIDISING agent.

Discussion

4077.	Name the oxidising agents used for the conversion of ethanol to ethanoic acid. Distinguish between ethanol and ethanoic acid on the basis of (i) litmus test (ii) reaction with sodium carbonate.
Answer» Solution :The OXIDIZING AGENTS used for the CONVERSION of ethanol to ETHANOIC acid are alkaline potassium permanganate `(KMnO_(4))` and acidified potassium dichromate `(K_(2)Cr_(2)O_(7))`

Discussion

4078.	Name the organic compound prepared by the following reactions: CaC_2 + 2H_2O to
Answer» SOLUTION :ETHYNE `(C_2H_2)`

Discussion

4079.	Name the organic compound prepared by the following reactions: CH_3I + 2H to
Answer» SOLUTION :METHANE`(CH_4)`

Discussion

4080.	Name the organic compound prepared by the following reactions: C_2H_5COONa + NaOH to
Answer» SOLUTION :ETHANE `(C_2H_6)`

Discussion

4081.	Name the organic compound prepared by the following reactions: C_2H_5Br + KOH (alcoholic solution) to
Answer» SOLUTION :ETHANE`(C_2H_4)`

Discussion

4082.	Name the organic acid present in tomato
Answer» TARTARIC acid Malic acid Lactic acid Oxalic acid Answer :D

Discussion

4083.	Name the organic acid present in red ants.
Answer» SOLUTION :Methanoic ACID COMMONLY CALLED as FORMIC acid.

Discussion

4084.	Name the most abundant metal in the earth's crust.
Answer» SOLUTION :ALUMINIUM.

Discussion

4085.	Name the molecular orbital having energy greater than that of combining atomic orbitals.
Answer» SOLUTION :Antibonding MOLECULAR ORBITAL

Discussion

4086.	Name the molecular theory that can explain magnetic character of molecules.
Answer» SOLUTION :MOLECULAR ORBITAL THEORY

Discussion

4087.	Name the methods used to prevent rusting.
Answer» Solution :(1) Oiling of metals, (2) Applying paints, rusting (3) Preparation of an ALLOY and (4) Electroplating or galvanising.

Discussion

4088.	Name the method used for the preparation of the following salts from the list given below: (i) Sodium nitrate (ii) Iron(III) chloride (iii) Lead chloride (iv) Zinc sulphate (v) Sodium hydrogen sulphate List: (A) Simple displacement (B) Neutralisation ( C) Decomposition by acid (D) Double decomposition (E) Direct synthesis.
Answer» Solution :(i) C (ii) E (iii) D (IV) A (V) B

Discussion

4089.	Name the metals which exist in free state and which exist in combined state.
Answer» Solution :(a) METALS found in FREE state. Gold, Silver, Platinum, Copper. (b) Metals found in COMBINED state. ZINC, Iron, Lead.

Discussion

4090.	Name the metals which are most malleable in nature.
Answer» SOLUTION :GOLD and SILVER

Discussion

4091.	Name the metals present in bronze, and write its one use.
Answer» SOLUTION :COPPER (CU) and tin (Sn), bronze is USED to mint coins.

Discussion

4092.	Name the metallic ions that should be present in the electrolyte when an article of copper is to be electroplated with silver .
Answer» SOLUTION :`AG^(+)`

Discussion

4093.	Name the metal which is extracted from bauxite.
Answer» SOLUTION :ALUMINIUM

Discussion

4094.	Name the metal which has very low melting point and can melt with the heat of your palm.
Answer» SOLUTION :Gallium/Caesium.

Discussion

4095.	Name the metal which has very low melting point and can melt with heat of your palm ?
Answer» SOLUTION :GALLIUM.

Discussion

4096.	Name the metal which can be cut with a knife.
Answer» SOLUTION :SODIUM (NA)

Discussion

4097.	Name the metal present in chlorophyll which is used in photosynthesis.
Answer» SOLUTION :MAGNESIUM.

Discussion

4098.	Name the major chemical properties (reactions) of carbon compounds.
Answer» Solution :Major chemical properties (REACTIONS) of carbon compounds are : (1) Combustion, (2) Oxidation, (3) Addition reaction and (4) SUBSTITUTION reaction.

Discussion

4099.	Name the main features of carbon which make it a unique element that it forms a large number of organic compounds.
Answer» SOLUTION : Tetravalency, catenation, ABILITY to form multiple BONDS and isomerism

Discussion

4100.	Name the least reactive metal.
Answer» SOLUTION :GOLD is the LEAST REACTIVE METAL.

Discussion

Explore topic-wise InterviewSolutions in .

Name the reaction which forms insoluble salts.

Write chemical equations of the reactions of ethanoic acid withEthanol in the presence of conc. H_2SO_4

Name the reaction observed during rancidity of food.

Name the reaction in which two compounds exchange their ions to form two new compounds.

Name the property which all the elements of group 13 have in common.

Name the property used to measure the degree of polarity.

Name the property of ethyne which makes it useful for cutting and welding of steel.

Name the property common to all the elements of the group in which fluorine is placed.

Name the products of chlor-alkali process. Write one use of each.

Name the products obtained when zinc blende is roasted .

Name the products obtained when limestone is calcined.

Name the products formed when an acid reacts with a base.

Name the products formed when ethanoic acid reacts with a sodium hydrogen carbonate.

Name the product formed, when silver bromide is exposed to sunlight.

Namethe product formed when magnesium burns in air ?

Name the product formed when hydrogen is burnt in air.

Name the product formed when acetic acid is treated with sodium hydroxide solution .

Name the process . Ore heatedin the presenceof excess of air .

Name the process . Ore heatedin the absence of air .

Name the process of converting vegetable oil to vegetable ghee.

Name the process by which unsaturated fats are changed to saturated fats.

Name the phenomenon associated with the use of (i) CFC (ii) DDT

Name the phenomena used to describe a molecule whose single Lewis structure cannot describe it.

Name the part of the eye where image is formed by the eye lens. What is the nature of the image formed ? How is their sent to the brain ?

Name the periodic properties and why are they called so ?

Name the oxidising and reducing agent in the following reaction: 2H_(2)S+SO_(2)rarr2H_(2)O+3Sdarr

Name the oxidising agents used for the conversion of ethanol to ethanoic acid. Distinguish between ethanol and ethanoic acid on the basis of (i) litmus test (ii) reaction with sodium carbonate.

Name the organic compound prepared by the following reactions: CaC_2 + 2H_2O to

Name the organic compound prepared by the following reactions: CH_3I + 2H to

Name the organic compound prepared by the following reactions: C_2H_5COONa + NaOH to

Name the organic compound prepared by the following reactions: C_2H_5Br + KOH (alcoholic solution) to

Name the organic acid present in tomato

Name the organic acid present in red ants.

Name the most abundant metal in the earth's crust.

Name the molecular orbital having energy greater than that of combining atomic orbitals.

Name the molecular theory that can explain magnetic character of molecules.

Name the methods used to prevent rusting.

Name the metals which exist in free state and which exist in combined state.

Name the metals which are most malleable in nature.

Name the metals present in bronze, and write its one use.

Name the metallic ions that should be present in the electrolyte when an article of copper is to be electroplated with silver .

Name the metal which is extracted from bauxite.

Name the metal which has very low melting point and can melt with the heat of your palm.

Name the metal which has very low melting point and can melt with heat of your palm ?

Name the metal which can be cut with a knife.

Name the metal present in chlorophyll which is used in photosynthesis.

Name the major chemical properties (reactions) of carbon compounds.

Name the main features of carbon which make it a unique element that it forms a large number of organic compounds.

Name the least reactive metal.