15280 + Interview Questions in Chemistry Page 219 InterviewSolution

10901.	Which of the following gases produce dense white fumes on reacting with ammonia gas?
Answer» Which of the following gases produce dense white fumes on reacting with ammonia gas?

Discussion

10902.	In the naming of the given diagram, the carbon to the right will be the 1st carbon in the main chain. What is the name of the given compound?
Answer» In the naming of the given diagram, the carbon to the right will be the 1st carbon in the main chain. What is the name of the given compound?

Discussion

10903.	Explain About Oxidation and Reduction.Also Differentiate between them.Give Some reactions..How to identify which reactant is getting oxidised and which is getting reduced.Please give a clue about how to do the above stuff ???
Answer» Explain About Oxidation and Reduction.Also Differentiate between them.Give Some reactions..How to identify which reactant is getting oxidised and which is getting reduced.Please give a clue about how to do the above stuff ???

Discussion

10904.	How many maximum no. of electrons can be accommodated in the d-subshell?10
Answer» How many maximum no. of electrons can be accommodated in the d-subshell? 10

Discussion

10905.	Why do not non metals conduct electricity?
Answer» Why do not non metals conduct electricity?

Discussion

10906.	identify type of reaction Al(OH) 3+ 3HCl - - - - AlCl3 +3H2O MnO2+4H+ +2Cl- -----Mn2+ +2H2O +Cl2
Answer» identify type of reaction Al(OH) ₃+ 3HCl - - - - AlCl₃+3H₂O MnO₂+4H⁺ +2Cl^------Mn²⁺+2H₂O +Cl₂

10906.

identify type of reaction Al(OH) 3+ 3HCl - - - - AlCl3 +3H2O MnO2+4H+ +2Cl- -----Mn2+ +2H2O +Cl2

Answer»

identify type of reaction

Al(OH) ₃+ 3HCl - - - - AlCl₃+3H₂O

MnO₂+4H⁺ +2Cl^------Mn²⁺+2H₂O +Cl₂

Discussion

10907.	What is the vacancy of nitrogen in N2 molecules and why
Answer» What is the vacancy of nitrogen in N2 molecules and why

Discussion

10908.	State the main aim of classifying elements. Write the more fundamental property of elements that is used in the development of modern periodic table? Name and state the law based on this fundamental property. On which side of the periodic table one can find metals,non metals,Metalloids?
Answer» State the main aim of classifying elements. Write the more fundamental property of elements that is used in the development of modern periodic table? Name and state the law based on this fundamental property. On which side of the periodic table one can find metals,non metals,Metalloids?

Discussion

10909.	Diffferences between ethanol and ethanoic acid ?
Answer» Diffferences between ethanol and ethanoic acid ?

Discussion

10910.	Did fire reproduce ??
Answer» Did fire reproduce ??

Discussion

10911.	Identify the group and valency of hte element having atomic number 119. Also predict the outermost electronic configuration and write the general formula of its oxide.
Answer» Identify the group and valency of hte element having atomic number 119. Also predict the outermost electronic configuration and write the general formula of its oxide.

Discussion

10912.	Hydrogen differs from alkali metals as it:
Answer» Hydrogen differs from alkali metals as it:

Discussion

10913.	Calculate the percentage of phosphorus in the fertilizer, superphosphate Ca(H2PO4)2. [H = 1, O = 16, P = 31, C = 40]
Answer» Calculate the percentage of phosphorus in the fertilizer, superphosphate $C a (H_{2} P O_{4})_{2}$ . [H = 1, O = 16, P = 31, C = 40]

Discussion

10914.	(a) What is meant by a chemical reaction ? Explain with the help of an example. (b) Give one example each of a chemical reaction characterised by : (i) evolution of a gas (ii) change in colour (iii) formation of a precipitate (iv) change in temperature (v) change in state.
Answer» (a) What is meant by a chemical reaction ? Explain with the help of an example. (b) Give one example each of a chemical reaction characterised by : (i) evolution of a gas (ii) change in colour (iii) formation of a precipitate (iv) change in temperature (v) change in state.

10914.

(a) What is meant by a chemical reaction ? Explain with the help of an example. (b) Give one example each of a chemical reaction characterised by : (i) evolution of a gas (ii) change in colour (iii) formation of a precipitate (iv) change in temperature (v) change in state.

Answer»

(a) What is meant by a chemical reaction ? Explain with the help of an example.

(b) Give one example each of a chemical reaction characterised by :
(i) evolution of a gas

(ii) change in colour

(iii) formation of a precipitate

(iv) change in temperature

(v) change in state.

Discussion

10915.	Question 14Give a test that can be used chemically to differentiate between butter and cooking oil.
Answer» Question 14 Give a test that can be used chemically to differentiate between butter and cooking oil.

Discussion

10916.	In the species i) 4.0g of NaOH ii) 4.8g of SO2 iii) 4.0 g of CO2 iv) 2.8 g of CaO, decreasing order of the weight of oxygen is
Answer» In the species i) 4.0g of $N a O H$ ii) 4.8g of $S O_{2}$ iii) 4.0 g of $C O_{2}$ iv) 2.8 g of $C a O$ , decreasing order of the weight of oxygen is

10916.

In the species i) 4.0g of NaOH ii) 4.8g of SO2 iii) 4.0 g of CO2 iv) 2.8 g of CaO, decreasing order of the weight of oxygen is

Answer»

In the species

i) 4.0g of $N a O H$ ii) 4.8g of $S O_{2}$

iii) 4.0 g of $C O_{2}$ iv) 2.8 g of $C a O$ ,

decreasing order of the weight of oxygen is

Discussion

10917.	The IUPAC name of CH3−C\|\|O−CH2−CH\|OH−CHO is
Answer» The IUPAC name of $C H_{3} - C \| \| O - C H_{2} - C H \| O H - C H O$ is

Discussion

10918.	Write down (i) structural formula, and (ii) electron-dot formula, of any one isomer of hexane (C6H14), other than n-hexane.
Answer» Write down (i) structural formula, and (ii) electron-dot formula, of any one isomer of hexane ( $C_{6} H_{14}$ ), other than n-hexane.

Discussion

10919.	When Hydrogen is obtained through electrolysis of acid diluted water then hydrogen gas evolves at ___ charged electrode.
Answer» When Hydrogen is obtained through electrolysis of acid diluted water then hydrogen gas evolves at ___ charged electrode.

Discussion

10920.	A metal reacts with dilute Hydrochloric acid to produce a gas. What is used to identify this gas?
Answer» A metal reacts with dilute Hydrochloric acid to produce a gas. What is used to identify this gas?

Discussion

10921.	Choose the correct statement regarding electrolysis of acidified water from the options given below.
Answer» Choose the correct statement regarding electrolysis of acidified water from the options given below.

Discussion

10922.	Question 4 Under what soil conditions do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate)?
Answer» Question 4 Under what soil conditions do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate)?

Discussion

10923.	Choose the correct option based on the statement given: Statement 1: Carbon always shares electrons and forms covalent bond with other elements. Statement 2: C+4 and C−4 ions are highly unstable.
Answer» Choose the correct option based on the statement given: Statement 1: Carbon always shares electrons and forms covalent bond with other elements. Statement 2: $C^{+ 4}$ and $C^{- 4}$ ions are highly unstable.

10923.

Choose the correct option based on the statement given: Statement 1: Carbon always shares electrons and forms covalent bond with other elements. Statement 2: C+4 and C−4 ions are highly unstable.

Answer»

Choose the correct option based on the statement given:

Statement 1: Carbon always shares electrons and forms covalent bond with other elements.

Statement 2: $C^{+ 4}$ and $C^{- 4}$ ions are highly unstable.

Discussion

10924.	Which of the following observation is true about dilute solution of acetic acid?
Answer» Which of the following observation is true about dilute solution of acetic acid?

Discussion

10925.	Iron : Copper : Zinc : ?
Answer» Iron : Copper : Zinc : ?

Discussion

10926.	Aditya remembered that Sodium shouldn’t be stored in water and so he used ethanol to store sodium. He observed that sodium disappeared to give a yellow powder. What is this yellow powder?
Answer» Aditya remembered that Sodium shouldn’t be stored in water and so he used ethanol to store sodium. He observed that sodium disappeared to give a yellow powder. What is this yellow powder?

Discussion

10927.	The bond between two identical non-metallic atoms has at least one pair of electron:
Answer» The bond between two identical non-metallic atoms has at least one pair of electron:

Discussion

10928.	In nature, aluminium is found in the form of compounds while gold is found in free state. Give reason. [3 MARKS]
Answer» In nature, aluminium is found in the form of compounds while gold is found in free state. Give reason. [3 MARKS]

Discussion

10929.	The products of reaction between zinc and sodium hydroxide solution are : (a) sodium carbonate and water (b) sodium zincate and hydrogen (c) zinc hydroxide and hydrogen (d) zinc
Answer» The products of reaction between zinc and sodium hydroxide solution are : (a) sodium carbonate and water (b) sodium zincate and hydrogen (c) zinc hydroxide and hydrogen (d) zinc

Discussion

10930.	In the figure given alongside, the various trophic levels are shown in the form of a pyramid. At which trophic level the maximum energy is available? (a) T4 (b) T2 (c) T1 (d) T3
Answer» In the figure given alongside, the various trophic levels are shown in the form of a pyramid. At which trophic level the maximum energy is available? (a) $T_{4}$ (b) $T_{2}$ (c) $T_{1}$ (d) $T_{3}$

10930.

In the figure given alongside, the various trophic levels are shown in the form of a pyramid. At which trophic level the maximum energy is available? (a) T4 (b) T2 (c) T1 (d) T3

Answer»

In the figure given alongside, the various trophic levels are shown in the form of a pyramid. At which trophic level the maximum energy is available?

(a) $T_{4}$

(b) $T_{2}$

(c) $T_{1}$

(d) $T_{3}$

Discussion

10931.	Give a method for the disposal of household wastes such as left-over food, fruit and vegetable peels, and leaves of potted plants.
Answer» Give a method for the disposal of household wastes such as left-over food, fruit and vegetable peels, and leaves of potted plants.

Discussion

10932.	Which of the following is used in the preparation of a pesticide?
Answer» Which of the following is used in the preparation of a pesticide?

Discussion

10933.	Why are concentric circles formed on the surface of a watch glass after water is evaporated from it?
Answer» Why are concentric circles formed on the surface of a watch glass after water is evaporated from it?

Discussion

10934.	Fill in the blank with a number which balances the following reaction. 3Fe+4H2O→Fe3O4+yH2 Then, y= ___
Answer» Fill in the blank with a number which balances the following reaction. $3 F e + 4 H_{2} O \to F e_{3} O_{4} + y H_{2}$ Then, $y =$ ___

10934.

Fill in the blank with a number which balances the following reaction. 3Fe+4H2O→Fe3O4+yH2 Then, y= ___

Answer»

Fill in the blank with a number which balances the following reaction.

$3 F e + 4 H_{2} O \to F e_{3} O_{4} + y H_{2}$

Then,

y =

___

Discussion

10935.	What are the positional isomers of C3H8O?
Answer» What are the positional isomers of $C_{3} H_{8} O$ ?

Discussion

10936.	Explain colloids with examples.
Answer» Explain colloids with examples.

Discussion

10937.	Which of the following is not a saturated hydrocarbon?
Answer» Which of the following is not a saturated hydrocarbon?

Discussion

10938.	The two of the most important properties of carbon would be: catenation and __.
Answer» The two of the most important properties of carbon would be: catenation and __.

Discussion

10939.	What is coordinate bond give example with dot diagram
Answer» What is coordinate bond give example with dot diagram

Discussion

10940.	A solution is said to be ___ if the amount of solute is small compared to the mass of the solvent.
Answer» A solution is said to be ___ if the amount of solute is small compared to the mass of the solvent.

Discussion

10941.	How many unbonded electrons are present on N in NO?
Answer» How many unbonded electrons are present on N in NO?

Discussion

10942.	The process by which solid changes into liquids is called as __________.
Answer» The process by which solid changes into liquids is called as __________.

Discussion

10943.	Sir/ Ma'am Is it true that crystalline forms of carbon having 30 to 960 atoms in their molecules are called Fullerenes ? Please confirm the no of atoms. Why carbon monoxide, carbon dioxide, carbonates, bicarbonates and carbides are not considered organic compounds ?
Answer» Sir/ Ma'am Is it true that crystalline forms of carbon having 30 to 960 atoms in their molecules are called Fullerenes ? Please confirm the no of atoms. Why carbon monoxide, carbon dioxide, carbonates, bicarbonates and carbides are not considered organic compounds ?

10943.

Sir/ Ma'am Is it true that crystalline forms of carbon having 30 to 960 atoms in their molecules are called Fullerenes ? Please confirm the no of atoms. Why carbon monoxide, carbon dioxide, carbonates, bicarbonates and carbides are not considered organic compounds ?

Answer» Sir/ Ma'am

Is it true that crystalline forms of carbon having 30 to 960 atoms in their molecules are called Fullerenes ?

Please confirm the no of atoms.

Why carbon monoxide, carbon dioxide, carbonates, bicarbonates and carbides are not considered organic compounds ?

Discussion

10944.	The ionic species having largest size is?
Answer» The ionic species having largest size is?

Discussion

10945.	Which of the following metals do not react with sulphuric acid under any condition?
Answer» Which of the following metals do not react with sulphuric acid under any condition?

Discussion

10946.	How can I differentiate the product obtained from the equation is a salt? (or) How can I find that the obtained product from a chemical equation is a salt??
Answer» How can I differentiate the product obtained from the equation is a salt? (or) How can I find that the obtained product from a chemical equation is a salt??

Discussion

10947.	Which of the following types of medicine is used for the treatment of indigestion?
Answer» Which of the following types of medicine is used for the treatment of indigestion?

Discussion

10948.	19. Define, rancidity. What kind of substances are used to prevent rancidity? Explain any three methods to prevent rancidity.(5 marks)
Answer» 19. Define, rancidity. What kind of substances are used to prevent rancidity? Explain any three methods to prevent rancidity.(5 marks)

Discussion

10949.	Question 3 Which of the following statements about the given reaction are correct? 3Fe(s)+4H2O(g)→Fe3O4(s)+4H2(g) (i) Iron metal is getting oxidised (ii) Water is getting reduced (iii) Water is acting as reducing agent (iv) Water is acting as oxidizing agent (a) (i), (ii) and (iii) (b) (iii) and (iv) (c) (i), (ii) and (iv) (d) (ii) and (iv)
Answer» Question 3 Which of the following statements about the given reaction are correct? $3 Fe(s) + 4 H_{2} O(g) \to {Fe}_{3} O_{4} (s) + 4 H_{2} (g)$ (i) Iron metal is getting oxidised (ii) Water is getting reduced (iii) Water is acting as reducing agent (iv) Water is acting as oxidizing agent (a) (i), (ii) and (iii) (b) (iii) and (iv) (c) (i), (ii) and (iv) (d) (ii) and (iv)

Discussion

10950.	Which of the following does not have peroxy bond?
Answer» Which of the following does not have peroxy bond?

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following gases produce dense white fumes on reacting with ammonia gas?

In the naming of the given diagram, the carbon to the right will be the 1st carbon in the main chain. What is the name of the given compound?

Explain About Oxidation and Reduction.Also Differentiate between them.Give Some reactions..How to identify which reactant is getting oxidised and which is getting reduced.Please give a clue about how to do the above stuff ???

How many maximum no. of electrons can be accommodated in the d-subshell?10

Why do not non metals conduct electricity?

identify type of reaction Al(OH) ​​​​​3+ 3HCl - - - - AlCl3 +3H2O MnO2+4H+ +2Cl- -----Mn2+ +2H2O +Cl2

What is the vacancy of nitrogen in N2 molecules and why

State the main aim of classifying elements. Write the more fundamental property of elements that is used in the development of modern periodic table? Name and state the law based on this fundamental property. On which side of the periodic table one can find metals,non metals,Metalloids?

Diffferences between ethanol and ethanoic acid ?

Did fire reproduce ??

Identify the group and valency of hte element having atomic number 119. Also predict the outermost electronic configuration and write the general formula of its oxide.

Hydrogen differs from alkali metals as it:

Calculate the percentage of phosphorus in the fertilizer, superphosphate Ca(H2PO4)2. [H = 1, O = 16, P = 31, C = 40]

(a) What is meant by a chemical reaction ? Explain with the help of an example. (b) Give one example each of a chemical reaction characterised by : (i) evolution of a gas (ii) change in colour (iii) formation of a precipitate (iv) change in temperature (v) change in state.

Question 14Give a test that can be used chemically to differentiate between butter and cooking oil.

In the species i) 4.0g of NaOH ii) 4.8g of SO2 iii) 4.0 g of CO2 iv) 2.8 g of CaO, decreasing order of the weight of oxygen is

The IUPAC name of CH3−C||O−CH2−CH|OH−CHO is

Write down (i) structural formula, and (ii) electron-dot formula, of any one isomer of hexane (C6H14), other than n-hexane.

When Hydrogen is obtained through electrolysis of acid diluted water then hydrogen gas evolves at ___ charged electrode.

A metal reacts with dilute Hydrochloric acid to produce a gas. What is used to identify this gas?

Choose the correct statement regarding electrolysis of acidified water from the options given below.

Question 4 Under what soil conditions do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate)?

Choose the correct option based on the statement given: Statement 1: Carbon always shares electrons and forms covalent bond with other elements. Statement 2: C+4 and C−4 ions are highly unstable.

Which of the following observation is true about dilute solution of acetic acid?

Iron : Copper : Zinc : ?

Aditya remembered that Sodium shouldn’t be stored in water and so he used ethanol to store sodium. He observed that sodium disappeared to give a yellow powder. What is this yellow powder?

The bond between two identical non-metallic atoms has at least one pair of electron:

In nature, aluminium is found in the form of compounds while gold is found in free state. Give reason. [3 MARKS]

The products of reaction between zinc and sodium hydroxide solution are : (a) sodium carbonate and water (b) sodium zincate and hydrogen (c) zinc hydroxide and hydrogen (d) zinc

In the figure given alongside, the various trophic levels are shown in the form of a pyramid. At which trophic level the maximum energy is available? (a) T4 (b) T2 (c) T1 (d) T3

Give a method for the disposal of household wastes such as left-over food, fruit and vegetable peels, and leaves of potted plants.

Which of the following is used in the preparation of a pesticide?

Why are concentric circles formed on the surface of a watch glass after water is evaporated from it?

Fill in the blank with a number which balances the following reaction. 3Fe+4H2O→Fe3O4+yH2 Then, y= ___

What are the positional isomers of C3H8O?

Explain colloids with examples.

Which of the following is not a saturated hydrocarbon?

The two of the most important properties of carbon would be: catenation and __.

What is coordinate bond give example with dot diagram

A solution is said to be ___ if the amount of solute is small compared to the mass of the solvent.

How many unbonded electrons are present on N in NO?

The process by which solid changes into liquids is called as __________.

Sir/ Ma'am Is it true that crystalline forms of carbon having 30 to 960 atoms in their molecules are called Fullerenes ? Please confirm the no of atoms. Why carbon monoxide, carbon dioxide, carbonates, bicarbonates and carbides are not considered organic compounds ?

The ionic species having largest size is?

Which of the following metals do not react with sulphuric acid under any condition?

How can I differentiate the product obtained from the equation is a salt? (or) How can I find that the obtained product from a chemical equation is a salt??

Which of the following types of medicine is used for the treatment of indigestion?

19. Define, rancidity. What kind of substances are used to prevent rancidity? Explain any three methods to prevent rancidity.(5 marks)

Which of the following does not have peroxy bond?

identify type of reaction Al(OH) 3+ 3HCl - - - - AlCl3 +3H2O MnO2+4H+ +2Cl- -----Mn2+ +2H2O +Cl2