5083 + Interview Questions in Chemistry Page 60 InterviewSolution

2951.	Dorji has a few bottles of soft drink in his restaurant. But, unfortunately, these are not labelled. He has to serve the drinks on the demand of customers. One customer wants acidic drink, another wants basic and third one wants neutral drink. How will Dorji decide which drink is to be served to whom?
Answer» Dorji has a few bottles of soft drink in his restaurant. But, unfortunately, these are not labelled. He has to serve the drinks on the demand of customers. One customer wants acidic drink, another wants basic and third one wants neutral drink. How will Dorji decide which drink is to be served to whom?

Discussion

2952.	How does dumping water on fire extinguishes it?
Answer» How does dumping water on fire extinguishes it?

Discussion

2953.	The brown surface of copper becomes black onheating in air. When hydrogen gas is passed overthis black surface, it turns
Answer» The brown surface of copper becomes black onheating in air. When hydrogen gas is passed overthis black surface, it turns

Discussion

2954.	The mass of carbon anode consumed (giving only carbon dioxide) in the production of 270kg of aluminium metal from bauxite by hall processis
Answer» The mass of carbon anode consumed (giving only carbon dioxide) in the production of 270kg of aluminium metal from bauxite by hall processis

Discussion

2955.	Define selective breeding.
Answer» Define selective breeding.

Discussion

2956.	Raja by mistake poured kerosene in a bottle of water. How will you guide him so that he is able to separate the mixtures like it was before? [3 MARKS]
Answer» Raja by mistake poured kerosene in a bottle of water. How will you guide him so that he is able to separate the mixtures like it was before? [3 MARKS]

Discussion

2957.	During purification of water, the unpleasant smell is removed with the help of:
Answer» During purification of water, the unpleasant smell is removed with the help of:

Discussion

2958.	Give reason why rusting takes place faster near a sea coast.
Answer» Give reason why rusting takes place faster near a sea coast.

Discussion

2959.	What is the function of skimmer in waste water treatment plant?
Answer» What is the function of skimmer in waste water treatment plant?

Discussion

2960.	What is E1; Sn1 ;Sn2; E2 mechanism?
Answer» What is E1; Sn1 ;Sn2; E2 mechanism?

Discussion

2961.	Analyse the elements given below and identify ‘X’ if the given elements are forming Dobereiner's triad.Li (6.9), Na (X), K (39.0)
Answer» Analyse the elements given below and identify ‘X’ if the given elements are forming Dobereiner's triad. Li (6.9), Na (X), K (39.0)

Discussion

2962.	How do plants respire? [3 MARKS]
Answer» How do plants respire? [3 MARKS]

Discussion

2963.	40. What a is weight of 1 molecular of Nacl
Answer» 40. What a is weight of 1 molecular of Nacl

Discussion

2964.	what is shear waves?
Answer» what is shear waves?

Discussion

2965.	Calculate the pressure of hydrogen passed through cathode half cell at 298 K.Pt(s)\|H2(g, 800 torr)\|HCl(aq)\|H2(g, p2)\|Pt(s)Given:Ecell=0.018 V102.3≈200
Answer» Calculate the pressure of hydrogen passed through cathode half cell at $298 K$ . $P t (s) \| H_{2} (g, 800 t o r r) \| H C l (a q) \| H_{2} (g, p_{2}) \| P t (s)$ Given: $E_{c e l l} = 0.018 V 10^{2.3} \approx 200$

Discussion

2966.	40. NaCl solution is added to a saturated solution of Pbcl2. What will happen to the concentration of Pb +2 ions ?
Answer» 40. NaCl solution is added to a saturated solution of Pbcl2. What will happen to the concentration of Pb +2 ions ?

Discussion

2967.	sodium hydroxide is manufactured in a specially designed cell called?
Answer» sodium hydroxide is manufactured in a specially designed cell called?

Discussion

2968.	The value of x in the system x - 3y = 7; 3x - 3y = 15 is:
Answer» The value of x in the system x - 3y = 7; 3x - 3y = 15 is:

Discussion

2969.	Sort the following in increasing order of their atomicity.
Answer» Sort the following in increasing order of their atomicity.

Discussion

2970.	What are the characteristics of the particles of matter?
Answer» What are the characteristics of the particles of matter?

Discussion

2971.	After the completion of the dyeing process, the fibres are _________ into yarn.
Answer» After the completion of the dyeing process, the fibres are _________ into yarn.

Discussion

2972.	The concentration of R in the reaction: R→ P was measured as a function of time and the following data is obtained:\lbrack R\rbrack (molar)1.0,0.75,0.40, 0.10 t(min.)0.0 ,0.05 ,0.12,0.18.The order of the reaction is.(1) Zero(2) 1(3) (4) 4
Answer» The concentration of R in the reaction: R→ P was measured as a function of time and the following data is obtained:\lbrack R\rbrack (molar)1.0,0.75,0.40, 0.10 t(min.)0.0 ,0.05 ,0.12,0.18.The order of the reaction is.(1) Zero(2) 1(3) (4) 4

Discussion

2973.	Question 12 (c) State whether the following statements is true or false. If false, correct it The rearing of silkworms for obtaining silk is called silviculture.
Answer» Question 12 (c) State whether the following statements is true or false. If false, correct it The rearing of silkworms for obtaining silk is called silviculture.

2973.

Question 12 (c) State whether the following statements is true or false. If false, correct it The rearing of silkworms for obtaining silk is called silviculture.

Answer»

Question 12 (c)

State whether the following statements is true or false. If false, correct it
The rearing of silkworms for obtaining silk is called silviculture.

Discussion

2974.	Out of solids, liquids and gases, which one hasmaximum interparticle attractions ?
Answer» Out of solids, liquids and gases, which one has maximum interparticle attractions ?

Discussion

2975.	Which of the following reacts with metal carbonates to produce carbon dioxide and water?
Answer» Which of the following reacts with metal carbonates to produce carbon dioxide and water?

Discussion

2976.	What is the formula of Simple intereat?
Answer» What is the formula of Simple intereat?

Discussion

2977.	What is modern quantum theory of light?
Answer» What is modern quantum theory of light?

Discussion

2978.	Consider the reaction N2O4(g)⇌2NO2(g). The temperature (in kelvin) at which KC=20.4and KP=600.1 is (Round off to the Nearest Integer) Assume all gases are ideal and R=0.0831LbarK−1mol−1]
Answer» Consider the reaction $N_{2} O_{4} (g) ⇌ 2 N O_{2} (g) .$ The temperature (in kelvin) at which $K_{C} = 20.4$ and $K_{P} = 600.1$ is (Round off to the Nearest Integer) Assume all gases are ideal and $R = 0.0831 L b a r K^{- 1} m o l^{- 1}$ ]

Discussion

2979.	Following figure shows ___
Answer» Following figure shows ___

2979.

Following figure shows ___

Answer»

Following figure shows ___

Discussion

2980.	Match the correct option
Answer» Match the correct option

2980.

Match the correct option

Answer»

Match the correct option

Discussion

2981.	A particular region in some state of India is observing a constant decrease in the water table. Identify the most probable reason for the same.
Answer» A particular region in some state of India is observing a constant decrease in the water table. Identify the most probable reason for the same.

Discussion

2982.	This is an example of which change:-
Answer» This is an example of which change:-

2982.

This is an example of which change:-

Answer»

This is an example of which change:-

Discussion

2983.	Explain the following: [2 MARKS] 1) What do you mean by white fleece of the lamb? 2) Which part of the black sheep has wool?
Answer» Explain the following: [2 MARKS] 1) What do you mean by white fleece of the lamb? 2) Which part of the black sheep has wool?

2983.

Explain the following: [2 MARKS] 1) What do you mean by white fleece of the lamb? 2) Which part of the black sheep has wool?

Answer»

Explain the following: [2 MARKS]

1) What do you mean by white fleece of the lamb?

2) Which part of the black sheep has wool?

Discussion

2984.	State whether the following statements are True or False. If false, give the correct statement.(a) Plants contribute in the water cycle through the process called evaporation.(b) 51% of the earth’s surface is covered with water.(c) Year 2003 was observed as the International Year of Freshwater.(d) Snow and ice both are solid forms of water.
Answer» State whether the following statements are True or False. If false, give the correct statement. (a) Plants contribute in the water cycle through the process called evaporation. (b) 51% of the earth’s surface is covered with water. (c) Year 2003 was observed as the International Year of Freshwater. (d) Snow and ice both are solid forms of water.

Discussion

2985.	Match the acids given in Column I with their correct source given in Column IIColumn IColumn IIA. Lactic acid1. TomatoB. Acetic acid2. LemonC. Citric acid3. VinegarD. Oxalic acid4. Curd
Answer» Match the acids given in Column I with their correct source given in Column II $\begin{matrix} Column I & Column II A. Lactic acid & 1. Tomato B. Acetic acid & 2. Lemon C. Citric acid & 3. Vinegar D. Oxalic acid & 4. Curd \end{matrix}$

Discussion

2986.	How is heleium different from hydrogen? Give 4 valid points
Answer» How is heleium different from hydrogen? Give 4 valid points

Discussion

2987.	why there is change in trend in redox potential in 1st group
Answer» why there is change in trend in redox potential in 1st group

Discussion

2988.	Rearrange the jumbled letters to obtain the name of an indicator. MUSLIT --> ___
Answer» Rearrange the jumbled letters to obtain the name of an indicator. MUSLIT --> ___

2988.

Rearrange the jumbled letters to obtain the name of an indicator. MUSLIT --> ___

Answer»

Rearrange the jumbled letters to obtain the name of an indicator.

MUSLIT --> ___

Discussion

2989.	Question 28Explain the role of decomposers in the environment?
Answer» Question 28 Explain the role of decomposers in the environment?

Discussion

2990.	Why Carbon -12 atom is only taken as standard for comparision of the atomic masses of various elements?
Answer» Why Carbon -12 atom is only taken as standard for comparision of the atomic masses of various elements?

Discussion

2991.	Which of the following metals can’t be used to make utensils?
Answer» Which of the following metals can’t be used to make utensils?

Discussion

2992.	what is the valency of oxygen whether iit is 2 or 6 ?
Answer» what is the valency of oxygen whether iit is 2 or 6 ?

Discussion

2993.	What is First focus and second focus ?
Answer» What is First focus and second focus ?

Discussion

2994.	Which of these metals cannot be used to prepare hydrogen by the action of an acid?A) Sodium. B)Iron. C) Calcium. D) Copper
Answer» Which of these metals cannot be used to prepare hydrogen by the action of an acid? A) Sodium. B)Iron. C) Calcium. D) Copper

Discussion

2995.	What is a radical? What is the difference between a cation and an ion?
Answer» What is a radical? What is the difference between a cation and an ion?

Discussion

2996.	Which of the following statement regarding chemical pesticides is not true?
Answer» Which of the following statement regarding chemical pesticides is not true?

Discussion

2997.	Question 19.4Write the balanced chemical equation for the following reaction and identify the type of the reaction.Ethene is burnt in the presence of oxygen to form carbon dioxide and water, and releases heat and light.
Answer» Question 19.4 Write the balanced chemical equation for the following reaction and identify the type of the reaction. Ethene is burnt in the presence of oxygen to form carbon dioxide and water, and releases heat and light.

Discussion

2998.	what are allotrophs
Answer» what are allotrophs

Discussion

2999.	When a teaspoon of sugar is added to half a glass of water and stirred, the water level in the glass remains unchanged. Give a reason.
Answer» When a teaspoon of sugar is added to half a glass of water and stirred, the water level in the glass remains unchanged. Give a reason.

Discussion

3000.	Pressure exerted by a perfect gas is equal to 1)Mean kinetic energy per unit volume 2)Half of the mean kinetic energy per unit volume (3) Two thirds of mean kinetic energy per unitvolume 4) One third of mean kinetic energy per unitvolume
Answer» Pressure exerted by a perfect gas is equal to 1)Mean kinetic energy per unit volume 2)Half of the mean kinetic energy per unit volume (3) Two thirds of mean kinetic energy per unitvolume 4) One third of mean kinetic energy per unitvolume

Discussion

Explore topic-wise InterviewSolutions in .

How does dumping water on fire extinguishes it?

The brown surface of copper becomes black onheating in air. When hydrogen gas is passed overthis black surface, it turns

The mass of carbon anode consumed (giving only carbon dioxide) in the production of 270kg of aluminium metal from bauxite by hall processis

Define selective breeding.

Raja by mistake poured kerosene in a bottle of water. How will you guide him so that he is able to separate the mixtures like it was before? [3 MARKS]

During purification of water, the unpleasant smell is removed with the help of:

Give reason why rusting takes place faster near a sea coast.

What is the function of skimmer in waste water treatment plant?

What is E1; Sn1 ;Sn2; E2 mechanism?

Analyse the elements given below and identify ‘X’ if the given elements are forming Dobereiner's triad.Li (6.9), Na (X), K (39.0)

How do plants respire? [3 MARKS]

40. What a is weight of 1 molecular of Nacl

what is shear waves?

Calculate the pressure of hydrogen passed through cathode half cell at 298 K.Pt(s)|H2(g, 800 torr)|HCl(aq)|H2(g, p2)|Pt(s)Given:Ecell=0.018 V102.3≈200

40. NaCl solution is added to a saturated solution of Pbcl2. What will happen to the concentration of Pb +2 ions ?

sodium hydroxide is manufactured in a specially designed cell called?

The value of x in the system x - 3y = 7; 3x - 3y = 15 is:

Sort the following in increasing order of their atomicity.

What are the characteristics of the particles of matter?

After the completion of the dyeing process, the fibres are _________ into yarn.

The concentration of R in the reaction: R→ P was measured as a function of time and the following data is obtained:\lbrack R\rbrack (molar)1.0,0.75,0.40, 0.10 t(min.)0.0 ,0.05 ,0.12,0.18.The order of the reaction is.(1) Zero(2) 1(3) (4) 4

Question 12 (c) State whether the following statements is true or false. If false, correct it The rearing of silkworms for obtaining silk is called silviculture.

Out of solids, liquids and gases, which one hasmaximum interparticle attractions ?

Which of the following reacts with metal carbonates to produce carbon dioxide and water?

What is the formula of Simple intereat?

What is modern quantum theory of light?

Consider the reaction N2O4(g)⇌2NO2(g). The temperature (in kelvin) at which KC=20.4and KP=600.1 is (Round off to the Nearest Integer) Assume all gases are ideal and R=0.0831LbarK−1mol−1]

Following figure shows ___

Match the correct option

A particular region in some state of India is observing a constant decrease in the water table. Identify the most probable reason for the same.

This is an example of which change:-

Explain the following: [2 MARKS] 1) What do you mean by white fleece of the lamb? 2) Which part of the black sheep has wool?

Match the acids given in Column I with their correct source given in Column IIColumn IColumn IIA. Lactic acid1. TomatoB. Acetic acid2. LemonC. Citric acid3. VinegarD. Oxalic acid4. Curd

How is heleium different from hydrogen? Give 4 valid points

why there is change in trend in redox potential in 1st group

Rearrange the jumbled letters to obtain the name of an indicator. MUSLIT --&gt; ___

Question 28Explain the role of decomposers in the environment?

Why Carbon -12 atom is only taken as standard for comparision of the atomic masses of various elements?

Which of the following metals can’t be used to make utensils?

what is the valency of oxygen whether iit is 2 or 6 ?

What is First focus and second focus ?

Which of these metals cannot be used to prepare hydrogen by the action of an acid?A) Sodium. B)Iron. C) Calcium. D) Copper

What is a radical? What is the difference between a cation and an ion?

Which of the following statement regarding chemical pesticides is not true?

Question 19.4Write the balanced chemical equation for the following reaction and identify the type of the reaction.Ethene is burnt in the presence of oxygen to form carbon dioxide and water, and releases heat and light.

what are allotrophs

When a teaspoon of sugar is added to half a glass of water and stirred, the water level in the glass remains unchanged. Give a reason.

Pressure exerted by a perfect gas is equal to 1)Mean kinetic energy per unit volume 2)Half of the mean kinetic energy per unit volume (3) Two thirds of mean kinetic energy per unitvolume 4) One third of mean kinetic energy per unitvolume

Rearrange the jumbled letters to obtain the name of an indicator. MUSLIT --> ___