7248 + Interview Questions in Chemistry Page 25 InterviewSolution

1201.	Question 1What are the different states in which water is found during the water cycle?
Answer» Question 1 What are the different states in which water is found during the water cycle?

Discussion

1202.	___ discovered the electron and ___ proposed its name.
Answer» ___ discovered the electron and ___ proposed its name.

Discussion

1203.	What is water of crystallization?
Answer» What is water of crystallization?

Discussion

1204.	which of the following has longest C-O bond length (1) (Mn(CO)_6^+ (2) Ni(CO)_4 (3) (Co(CO)_4)^- (4) (Fe(CO)_4{)^2
Answer» which of the following has longest C-O bond length (1) (Mn(CO)_6^+ (2) Ni(CO)_4 (3) (Co(CO)_4)^- (4) (Fe(CO)_4{)^2

Discussion

1205.	67 So3 can be obtained by HEATING 1. S + H2SO4 = 2. PCI5 + H2SO4 = 3. C + Ca SO4 = 4. Fe 2(SO4)3 =
Answer» 67 So3 can be obtained by HEATING 1. S + H2SO4 = 2. PCI5 + H2SO4 = 3. C + Ca SO4 = 4. Fe 2(SO4)3 =

Discussion

1206.	In which of the following reactions, law of mass conservation is not valid and why? (1) _4Be^{9 }+ _2He^4 → _6C^{12} + _0^1n (2) C + O_2 → CO_2 (3) CH_4 + 2O_2 → CO_2 + 2H_2O (4) NaOH + HCl → NaCl + H_2O
Answer» In which of the following reactions, law of mass conservation is not valid and why? (1) _4Be^{9 }+ _2He^4 → _6C^{12} + _0^1n (2) C + O_2 → CO_2 (3) CH_4 + 2O_2 → CO_2 + 2H_2O (4) NaOH + HCl → NaCl + H_2O

Discussion

1207.	How is global warming caused?
Answer» How is global warming caused?

Discussion

1208.	Name one substace which can exist in all three states also mention its form in solid, liquid and gas.
Answer» Name one substace which can exist in all three states also mention its form in solid, liquid and gas.

Discussion

1209.	According to bohr's postulates what will be the speed of-e in p orbit of a H atom?(a)h/2piemr(b)6h/piemr(c)3h/2piemr(d)3h/piemr
Answer» According to bohr's postulates what will be the speed of-e in p orbit of a H atom?(a)h/2piemr(b)6h/piemr(c)3h/2piemr(d)3h/piemr

Discussion

1210.	Of which type is each of the following reactions?
Answer» Of which type is each of the following reactions?

1210.

Of which type is each of the following reactions?

Answer»

Of which type is each of the following reactions?

Discussion

1211.	Water contains oxygen then it make the fire big then how can we stop it
Answer» Water contains oxygen then it make the fire big then how can we stop it

Discussion

1212.	The valency of carbon is 4 and that of oxygen is 2. Write the molecular formula formed between these two elements.
Answer» The valency of carbon is 4 and that of oxygen is 2. Write the molecular formula formed between these two elements.

Discussion

1213.	Which of the following compound is used in photography?
Answer» Which of the following compound is used in photography?

Discussion

1214.	Identify the four main categories of macromolecules in a cell from the below options?
Answer» Identify the four main categories of macromolecules in a cell from the below options?

Discussion

1215.	Which of the following is incorrect about a heterogeneous mixture?
Answer» Which of the following is incorrect about a heterogeneous mixture?

Discussion

1216.	Alliance of Small Island States (AOSIS) is concerned with
Answer» Alliance of Small Island States (AOSIS) is concerned with

Discussion

1217.	Which of the following are the products obtained from coal?1) Coal tar 2) Petrol 3) Coal gas4) Ammonical liquor5) Paraffin wax6) Coke
Answer» Which of the following are the products obtained from coal? 1) Coal tar 2) Petrol 3) Coal gas 4) Ammonical liquor 5) Paraffin wax 6) Coke

Discussion

1218.	what is coordination number of spinel or inverse spinel crystals ?
Answer» what is coordination number of spinel or inverse spinel crystals ?

Discussion

1219.	The binary compound formed when an element combines with oxygen is called an ___.
Answer» The binary compound formed when an element combines with oxygen is called an ___.

Discussion

1220.	Working of atomic clock ??
Answer» Working of atomic clock ??

Discussion

1221.	How to find the sum of charge on all protons in 1g aluminium.?
Answer» How to find the sum of charge on all protons in 1g aluminium.?

Discussion

1222.	The anomalous expansion of water is a boon to which of the given habitats in cold regions?
Answer» The anomalous expansion of water is a boon to which of the given habitats in cold regions?

Discussion

1223.	What are unpaired valence electron?
Answer» What are unpaired valence electron?

Discussion

1224.	Explain the consequences of deforestation.
Answer» Explain the consequences of deforestation.

Discussion

1225.	Statement-1: An element of valency 2 can combine with an element of valency 1. Statement-2: To write the chemical formula, one must know the symbol and valency of the elements.
Answer» Statement-1: An element of valency 2 can combine with an element of valency 1. Statement-2: To write the chemical formula, one must know the symbol and valency of the elements.

Discussion

1226.	Percentage of nitrogen in HNO3 is.
Answer» Percentage of nitrogen in HNO3 is.

Discussion

1227.	Name the process by which the substances of the cell move across the cell membrane.
Answer» Name the process by which the substances of the cell move across the cell membrane.

Discussion

1228.	correct order of bond angle in H2S NH3 BF3 and SiF4?
Answer» correct order of bond angle in H2S NH3 BF3 and SiF4?

Discussion

1229.	What are the advantages of powder coating?
Answer» What are the advantages of powder coating?

Discussion

1230.	Explain why our hair and nail increase if we cut
Answer» Explain why our hair and nail increase if we cut

Discussion

1231.	can be added to increase the pH of acidic soil.
Answer» can be added to increase the pH of acidic soil.

Discussion

1232.	Identify Arrhenius acids and bases among the following:1.NaCl2.HCl3.Cu(OH)24.NaOH5.H2SO46.HNO37.KOH
Answer» Identify Arrhenius acids and bases among the following: $\begin{matrix} 1. N a C l & 2. H C l 3. C u {(O H)}_{2} & 4. N a O H 5. H_{2} S O_{4} & 6. H N O_{3} 7. K O H \end{matrix}$

Discussion

1233.	15. How much should the pressure on a litre of waterbe changed to compress it by 0.10%. Elasticity ofwater is 2.2 x 109 Nm-2(1) 2.2 106 Pa(2) 4.4x 106 Pa(3) 3.2x 106 Pa(4) 5.1x 106 Pa
Answer» 15. How much should the pressure on a litre of waterbe changed to compress it by 0.10%. Elasticity ofwater is 2.2 x 109 Nm-2(1) 2.2 106 Pa(2) 4.4x 106 Pa(3) 3.2x 106 Pa(4) 5.1x 106 Pa

Discussion

1234.	Identify Arrhenius acids and bases among the following:1.NaCl2.HCl3.Cu(OH)24.NaOH5.H2SO46.HNO37.KOH
Answer» Identify Arrhenius acids and bases among the following: $\begin{matrix} 1. N a C l & 2. H C l 3. C u {(O H)}_{2} & 4. N a O H 5. H_{2} S O_{4} & 6. H N O_{3} 7. K O H \end{matrix}$

Discussion

1235.	Most acidic compound among the following is HCOOHC6H5COOHCH3COOHNO2CH2COOH
Answer» Most acidic compound among the following is HCOOH C6H5COOH CH3COOH NO2CH2COOH

Discussion

1236.	What are the various uses of petroleum products?
Answer» What are the various uses of petroleum products?

Discussion

1237.	what is direction and indirect hydration?
Answer» what is direction and indirect hydration?

Discussion

1238.	Which gas is liberated when dilute hydrochloric acid reacts with zinc metal? Write a balanced chemical equation for the reaction which takes place. How will you test this gas? Name a metal which produces the same gas just by reacting with cold water.
Answer» Which gas is liberated when dilute hydrochloric acid reacts with zinc metal? Write a balanced chemical equation for the reaction which takes place. How will you test this gas? Name a metal which produces the same gas just by reacting with cold water.

Discussion

1239.	How to get to know the product of reactants in chemical equation.
Answer» How to get to know the product of reactants in chemical equation.

Discussion

1240.	Match the substances given in Column A with their uses given in Column B. A B(i)Gold(a)Thermometers(ii)Iron(b)Electric wire(iii)Aluminium(c)Wrapping food(iv)Carbon(d)Jewellery(v)Copper(e)Machinery(vi)Mercury(f)Fuel
Answer» Match the substances given in Column A with their uses given in Column B. $\begin{matrix} A & B (i) & G o l d & (a) & T h e r m o m e t e r s (i i) & I r o n & (b) & E l e c t r i c w i r e (i i i) & A l u m i n i u m & (c) & W r a p p i n g f o o d (i v) & C a r b o n & (d) & J e w e l l e r y (v) & C o p p e r & (e) & M a c h i n e r y (v i) & M e r c u r y & (f) & F u e l \end{matrix}$

Discussion

1241.	Explain the rule with example according to which electrons are filled in various energy levels.
Answer» Explain the rule with example according to which electrons are filled in various energy levels.

Discussion

1242.	Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escapes in the time required for one-half of the hydrogen to escape?
Answer» Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escapes in the time required for one-half of the hydrogen to escape?

Discussion

1243.	Why a partial negative and positive charge develops in alkene when it is approached by an Electrophile ??
Answer» Why a partial negative and positive charge develops in alkene when it is approached by an Electrophile ??

Discussion

1244.	Types of coal
Answer» Types of coal

Discussion

1245.	Which of the following metals is/are kept in kerosene?
Answer» Which of the following metals is/are kept in kerosene?

Discussion

1246.	23. About cathode rays application and experiment
Answer» 23. About cathode rays application and experiment

Discussion

1247.	Choose the correct statements:
Answer» Choose the correct statements:

Discussion

1248.	End products of metallic reaction with dilute acids
Answer» End products of metallic reaction with dilute acids

Discussion

1249.	What is the symbol of hydrogen ion , hydronium ion and hydroxyl ion ?
Answer» What is the symbol of hydrogen ion , hydronium ion and hydroxyl ion ?

Discussion

1250.	A body weighs w at the surface of the earth. Its weight at a height equal to half the radius of the earth will be:-
Answer» A body weighs $w$ at the surface of the earth. Its weight at a height equal to half the radius of the earth will be:-

Discussion

Explore topic-wise InterviewSolutions in .

Question 1What are the different states in which water is found during the water cycle?

___ discovered the electron and ___ proposed its name.

What is water of crystallization?

which of the following has longest C-O bond length (1) (Mn(CO)_6^+ (2) Ni(CO)_4 (3) (Co(CO)_4)^- (4) (Fe(CO)_4{)^2

67 So3 can be obtained by HEATING 1. S + H2SO4 = 2. PCI5 + H2SO4 = 3. C + Ca SO4 = 4. Fe 2(SO4)3 =

In which of the following reactions, law of mass conservation is not valid and why? (1) _4Be^{9 }+ _2He^4 → _6C^{12} + _0^1n (2) C + O_2 → CO_2 (3) CH_4 + 2O_2 → CO_2 + 2H_2O (4) NaOH + HCl → NaCl + H_2O

How is global warming caused?

Name one substace which can exist in all three states also mention its form in solid, liquid and gas.

According to bohr's postulates what will be the speed of-e in p orbit of a H atom?(a)h/2piemr(b)6h/piemr(c)3h/2piemr(d)3h/piemr

Of which type is each of the following reactions?

Water contains oxygen then it make the fire big then how can we stop it

The valency of carbon is 4 and that of oxygen is 2. Write the molecular formula formed between these two elements.

Which of the following compound is used in photography?

Identify the four main categories of macromolecules in a cell from the below options?

Which of the following is incorrect about a heterogeneous mixture?

Alliance of Small Island States (AOSIS) is concerned with

Which of the following are the products obtained from coal?1) Coal tar 2) Petrol 3) Coal gas4) Ammonical liquor5) Paraffin wax6) Coke

what is coordination number of spinel or inverse spinel crystals ?

The binary compound formed when an element combines with oxygen is called an ___.

Working of atomic clock ??

How to find the sum of charge on all protons in 1g aluminium.?

The anomalous expansion of water is a boon to which of the given habitats in cold regions?

What are unpaired valence electron?

Explain the consequences of deforestation.

Statement-1: An element of valency 2 can combine with an element of valency 1. Statement-2: To write the chemical formula, one must know the symbol and valency of the elements.

Percentage of nitrogen in HNO3 is.

Name the process by which the substances of the cell move across the cell membrane.

correct order of bond angle in H2S NH3 BF3 and SiF4?

What are the advantages of powder coating?

Explain why our hair and nail increase if we cut

can be added to increase the pH of acidic soil.

Identify Arrhenius acids and bases among the following:1.NaCl2.HCl3.Cu(OH)24.NaOH5.H2SO46.HNO37.KOH

15. How much should the pressure on a litre of waterbe changed to compress it by 0.10%. Elasticity ofwater is 2.2 x 109 Nm-2(1) 2.2 106 Pa(2) 4.4x 106 Pa(3) 3.2x 106 Pa(4) 5.1x 106 Pa

Identify Arrhenius acids and bases among the following:1.NaCl2.HCl3.Cu(OH)24.NaOH5.H2SO46.HNO37.KOH

Most acidic compound among the following is HCOOHC6H5COOHCH3COOHNO2CH2COOH

What are the various uses of petroleum products?

what is direction and indirect hydration?

Which gas is liberated when dilute hydrochloric acid reacts with zinc metal? Write a balanced chemical equation for the reaction which takes place. How will you test this gas? Name a metal which produces the same gas just by reacting with cold water.

How to get to know the product of reactants in chemical equation.

Match the substances given in Column A with their uses given in Column B. A B(i)Gold(a)Thermometers(ii)Iron(b)Electric wire(iii)Aluminium(c)Wrapping food(iv)Carbon(d)Jewellery(v)Copper(e)Machinery(vi)Mercury(f)Fuel

Explain the rule with example according to which electrons are filled in various energy levels.

Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escapes in the time required for one-half of the hydrogen to escape?

Why a partial negative and positive charge develops in alkene when it is approached by an Electrophile ??

Types of coal

Which of the following metals is/are kept in kerosene?

23. About cathode rays application and experiment

Choose the correct statements:

End products of metallic reaction with dilute acids

What is the symbol of hydrogen ion , hydronium ion and hydroxyl ion ?

A body weighs w at the surface of the earth. Its weight at a height equal to half the radius of the earth will be:-

_ discovered the electron and _ proposed its name.