10223 + Interview Questions in Chemistry Page 108 InterviewSolution

5351.	A sequential account of each step, describing details of electron movement, energetics during bond cleavage and bond formation, and the rates of transformation of reactants into products (kinetics) is referred to as:
Answer» A sequential account of each step, describing details of electron movement, energetics during bond cleavage and bond formation, and the rates of transformation of reactants into products (kinetics) is referred to as:

Discussion

5352.	If the energy of H - atom in the ground state is −E, the velocity of photo electron emitted when a photon having energy Ep striked a stationary Li2+ ion in ground state, is given by:
Answer» If the energy of $H$ - atom in the ground state is $- E$ , the velocity of photo electron emitted when a photon having energy $E_{p}$ striked a stationary $L i^{2 +}$ ion in ground state, is given by:

Discussion

5353.	The phenomenon of radioactivity was discovered by
Answer» The phenomenon of radioactivity was discovered by

Discussion

5354.	Columbs force maximum betweenTwo protonTwo electronsOne proton one electron Same everywhere
Answer» Columbs force maximum between Two proton Two electrons One proton one electron Same everywhere

Discussion

5355.	Classify the following into true solutions and colloidal solutions : Ink, Salt solution, Starch solution, Blood, Sugar solution
Answer» Classify the following into true solutions and colloidal solutions : Ink, Salt solution, Starch solution, Blood, Sugar solution

5355.

Classify the following into true solutions and colloidal solutions : Ink, Salt solution, Starch solution, Blood, Sugar solution

Answer»

Classify the following into true solutions and colloidal solutions :

Ink, Salt solution, Starch solution, Blood, Sugar solution

Discussion

5356.	Question 25Write down the electron distribution of chlorine atom. How many electrons are there in the L shell?
Answer» Question 25 Write down the electron distribution of chlorine atom. How many electrons are there in the L shell?

Discussion

5357.	6.02×1020 molecules of urea are present in 100 mL of its solution. The concentration of solution is: -
Answer» $6.02 \times 10^{20}$ molecules of urea are present in $100 m L$ of its solution. The concentration of solution is: -

Discussion

5358.	21. The number of electrons present in &quotM" shell of silicon is?
Answer» 21. The number of electrons present in "M" shell of silicon is?

Discussion

5359.	Separate the following into physical and chemical changes: Sublimation of a solid, Decomposition of water into hydrogen and oxygen by passing an electric current, Formation of clouds, Making a fruit salad from raw fruits, Dissolving carbon dioxide in water
Answer» Separate the following into physical and chemical changes: Sublimation of a solid, Decomposition of water into hydrogen and oxygen by passing an electric current, Formation of clouds, Making a fruit salad from raw fruits, Dissolving carbon dioxide in water

5359.

Separate the following into physical and chemical changes: Sublimation of a solid, Decomposition of water into hydrogen and oxygen by passing an electric current, Formation of clouds, Making a fruit salad from raw fruits, Dissolving carbon dioxide in water

Answer»

Separate the following into physical and chemical changes:

Sublimation of a solid, Decomposition of water into hydrogen and oxygen by passing an electric current,

Formation of clouds, Making a fruit salad from raw fruits, Dissolving carbon dioxide in water

Discussion

5360.	The series limit for Balmer series of H-spectra is
Answer» The series limit for Balmer series of H-spectra is

Discussion

5361.	A hemispherical bowl made of brass has inner diameter 10.5 cm. Find the cost of tin-plating it on the inside at the rate of Rs 4 per 100 cm2.
Answer» A hemispherical bowl made of brass has inner diameter 10.5 cm. Find the cost of tin-plating it on the inside at the rate of Rs 4 per 100 cm².

Discussion

5362.	Which amongst the following is the formula of bisulphate ion?
Answer» Which amongst the following is the formula of bisulphate ion?

Discussion

5363.	CH4 and C2H6 belong to the same homologous series and they differ by a unit.
Answer» $C H_{4}$ and $C_{2} H_{6}$ belong to the same homologous series and they differ by a unit.

Discussion

5364.	Neils Bohr gave an explanation about the stability of atom. Which of the following laws do you think is applied to the structure of atom?
Answer» Neils Bohr gave an explanation about the stability of atom. Which of the following laws do you think is applied to the structure of atom?

Discussion

5365.	Question 7 Which of the following contains maximum number of molecules? (a) 1g CO2 (b) 1g N2 (c) 1g H2 (d) 1g CH4
Answer» Question 7 Which of the following contains maximum number of molecules? (a) $1 g C O_{2}$ (b) $1 g N_{2}$ (c) $1 g H_{2}$ (d) $1 g C H_{4}$

5365.

Question 7 Which of the following contains maximum number of molecules? (a) 1g CO2 (b) 1g N2 (c) 1g H2 (d) 1g CH4

Answer»

Question 7
Which of the following contains maximum number of molecules?

(a) $1 g C O_{2}$
(b) $1 g N_{2}$
(c) $1 g H_{2}$
(d) $1 g C H_{4}$

Discussion

5366.	An atom is electrically neutral. How can it be charged?
Answer» An atom is electrically neutral. How can it be charged?

Discussion

5367.	Subscripts in the chemical formula X2Y3 denotes:A. 2 atoms of X combine with 3 atoms of Y to form X2Y3B. The subscript 2 denotes that valency of X is 2.
Answer» Subscripts in the chemical formula $X_{2} Y_{3}$ denotes: A. 2 atoms of X combine with 3 atoms of Y to form $X_{2} Y_{3}$ B. The subscript 2 denotes that valency of X is 2.

5367.

Subscripts in the chemical formula X2Y3 denotes:A. 2 atoms of X combine with 3 atoms of Y to form X2Y3B. The subscript 2 denotes that valency of X is 2.

Answer»

Subscripts in the chemical formula $X_{2} Y_{3}$ denotes:

A. 2 atoms of X combine with 3 atoms of Y to form $X_{2} Y_{3}$

B. The subscript 2 denotes that valency of X is 2.

Discussion

5368.	40.A proton & alpha particle enter a uniform magnetic field perpendicular with same speed if proton takes 20us to make 5 revolutions then periodic time for alpha particle is 1) 5us 2) 8us 3) 10us 4) 16us Click here to view details:
Answer» 40.A proton & alpha particle enter a uniform magnetic field perpendicular with same speed if proton takes 20us to make 5 revolutions then periodic time for alpha particle is 1) 5us 2) 8us 3) 10us 4) 16us Click here to view details:

Discussion

5369.	Following compound can be used as accelerators except
Answer» Following compound can be used as accelerators except

Discussion

5370.	what is the use of ph scale and universal indicator in laboratory
Answer» what is the use of ph scale and universal indicator in laboratory

Discussion

5371.	The ratio of e/m for a cathode rayOptions:Varies with a gas in a discharge tubeShould have chosen Is fixedVaries with different electrodesIs maximum if hydrogen is taken
Answer» The ratio of e/m for a cathode ray Options: Varies with a gas in a discharge tube Should have chosen Is fixed Varies with different electrodes Is maximum if hydrogen is taken

Discussion

5372.	36. what is the difference between a reaction of gas and a homogenous gas phase reaction?
Answer» 36. what is the difference between a reaction of gas and a homogenous gas phase reaction?

Discussion

5373.	ntIs '3Fe+4H2O*Fe3O4+4H2' a thermal decomposition reaction?How?n
Answer» ntIs '3Fe+4H2O*Fe3O4+4H2' a thermal decomposition reaction?How?n

Discussion

5374.	Question 1 (a)Convert the following Temperature to Celsius scale:a. 300 K
Answer» Question 1 (a) Convert the following Temperature to Celsius scale: a. 300 K

Discussion

5375.	A compound of metal (M) and nitrogen (N)with formula M2N3 contains 28% of nitrogen. The atomic mass of metal M is
Answer» A compound of metal (M) and nitrogen (N)with formula M2N3 contains 28% of nitrogen. The atomic mass of metal M is

Discussion

5376.	Which of the following gas is the lightest?
Answer» Which of the following gas is the lightest?

Discussion

5377.	Why is ice at 273k is more effective in cooling than water at the same temperature
Answer» Why is ice at 273k is more effective in cooling than water at the same temperature

Discussion

5378.	Q. महाद्वीपीय विस्थापन सिद्धांत, प्लेट विवर्तनिकी सिद्धांत से कैसे भिन्न होता है?उपर्युक्त कथनों में से कौन-सा/से सही है/हैं?
Answer» Q. महाद्वीपीय विस्थापन सिद्धांत, प्लेट विवर्तनिकी सिद्धांत से कैसे भिन्न होता है? उपर्युक्त कथनों में से कौन-सा/से सही है/हैं?

5378.

Q. महाद्वीपीय विस्थापन सिद्धांत, प्लेट विवर्तनिकी सिद्धांत से कैसे भिन्न होता है?उपर्युक्त कथनों में से कौन-सा/से सही है/हैं?

Answer»

Q. महाद्वीपीय विस्थापन सिद्धांत, प्लेट विवर्तनिकी सिद्धांत से कैसे भिन्न होता है?

उपर्युक्त कथनों में से कौन-सा/से सही है/हैं?

Discussion

5379.	A particle moves from A to B in a circular path of radius R covering an angle theta ,find the ratio of the the distance and magnitude of displacement.
Answer» A particle moves from A to B in a circular path of radius R covering an angle theta ,find the ratio of the the distance and magnitude of displacement.

Discussion

5380.	Write the structures of compounds A, B and C in the following reactions:(a)NH3,/Heat−−−−−−−→ABr2,/KOH(aq)−−−−−−−−−→BCHCl3+ alc.KOH−−−−−−−−−−−→C(b)C6H5N+2BF4NaNO2,/Cu−−−−−−−→HeatAFe,/HCI−−−−−→OBCH3COCl, pyridine−−−−−−−−−−−−→C
Answer» Write the structures of compounds A, B and C in the following reactions: $(a) N H_{3}, / H e a t - ------ \to A B r_{2}, / K O H (a q) - -------- \to B C H C l_{3} + a l c . K O H - ---------- \to C (b) C_{6} H_{5} N_{2}^{+} B F_{4} N a N O_{2}, / C u - ------ \to H e a t A F e, / H C I - ---- \to O B C H_{3} C O C l, p y r i d i n e - ----------- \to C$

Discussion

5381.	At the liquefaction point, a ________ changes into a ________.
Answer» At the liquefaction point, a ________ changes into a ________.

Discussion

5382.	A vessel has 6 g of oxygen at a pressure P and temperature 400 K. A small hole is made in so that O2 leaks out. How much O2 leaks out if the pressure is P/2 and temperature 300 K?
Answer» A vessel has 6 g of oxygen at a pressure P and temperature 400 K. A small hole is made in so that O2 leaks out. How much O2 leaks out if the pressure is P/2 and temperature 300 K?

Discussion

5383.	Name the process you would use to separate ammonium chloride from a mixture of sodium chloride and ammonium chloride.
Answer» Name the process you would use to separate ammonium chloride from a mixture of sodium chloride and ammonium chloride.

Discussion

5384.	what is lone-pair and what is bond pair?
Answer» what is lone-pair and what is bond pair?

Discussion

5385.	Describe kolbes electrolysis
Answer» Describe kolbes electrolysis

Discussion

5386.	Which method is used to produce the acid used for etching alphabets on metals industrially?
Answer» Which method is used to produce the acid used for etching alphabets on metals industrially?

Discussion

5387.	Haemoglobin contains 0.33% of iron by weight . The molecular weight of haemoglobin is approximately 67200 . The number of iron atoms ( at . wt. of Fe=56) present in one molecule of haemoglobin is
Answer» Haemoglobin contains 0.33% of iron by weight . The molecular weight of haemoglobin is approximately 67200 . The number of iron atoms ( at . wt. of Fe=56) present in one molecule of haemoglobin is

Discussion

5388.	If the total vapour pressure of liquid mixture a and b is given by the equation P = 160 X + 80 then the ratio of vapour pressure of pure liquid a and b is given by
Answer» If the total vapour pressure of liquid mixture a and b is given by the equation P = 160 X + 80 then the ratio of vapour pressure of pure liquid a and b is given by

Discussion

5389.	How do atoms attain noble gas configuration ?
Answer» How do atoms attain noble gas configuration ?

Discussion

5390.	Halide of which of the following element always have only one lone pair on central atom :-1) Xe2) Cl3) Se4) N
Answer» Halide of which of the following element always have only one lone pair on central atom :- 1) Xe 2) Cl 3) Se 4) N

Discussion

5391.	Why crystallisation is better than evaporation?
Answer» Why crystallisation is better than evaporation?

Discussion

5392.	Suppose the elements X and Y combine to form two compounds XY_2 and X_3Y_2. When 0.1mole of XY_2 weighs 10g and 0.05 mole of X_{3 }Y_{2 } weighs 9g , the atomic weights of X and Y a
Answer» Suppose the elements X and Y combine to form two compounds XY_2 and X_3Y_2. When 0.1mole of XY_2 weighs 10g and 0.05 mole of X_{3 }Y_{2 } weighs 9g , the atomic weights of X and Y a

Discussion

5393.	Find the atomic number of an element whose atom has the electronic configuration 2, 8, 4.
Answer» Find the atomic number of an element whose atom has the electronic configuration 2, 8, 4.

Discussion

5394.	Reduction of nitro compounds in nuetral medium gives
Answer» Reduction of nitro compounds in nuetral medium gives

Discussion

5395.	A puddle formed by rain water dries up on the same day if there is bright sunshine. Which physical process is involved in this example?
Answer» A puddle formed by rain water dries up on the same day if there is bright sunshine. Which physical process is involved in this example?

Discussion

5396.	Xenon fluorides and oxyfluorides undergo hydrolysis. Match the following reactions with their products:
Answer» Xenon fluorides and oxyfluorides undergo hydrolysis. Match the following reactions with their products:

Discussion

5397.	Mendeleev predicted the existence of certain elements not known at that time and named two of them as Eka-silicon and Eka-aluminium. How many valence electrons are present in each one of them?
Answer» Mendeleev predicted the existence of certain elements not known at that time and named two of them as Eka-silicon and Eka-aluminium. How many valence electrons are present in each one of them?

Discussion

5398.	How many compounds or elements with PCl5 give POCl3 as a minor, major or intermediate product?Ag,Sn,H2O,C2H5OH,CH3COOH
Answer» How many compounds or elements with $P C l_{5} give P O C l_{3}$ as a minor, major or intermediate product? $A g, S n, H_{2} O, C_{2} H_{5} O H, C H_{3} C O O H$

Discussion

5399.	Hydrogen has only one orbital so how do the eletrons come from 5th, 4th orbital and create Lyman,bummer rays?
Answer» Hydrogen has only one orbital so how do the eletrons come from 5th, 4th orbital and create Lyman,bummer rays?

Discussion

5400.	Law of reciprocal proportion
Answer» Law of reciprocal proportion

Discussion

Explore topic-wise InterviewSolutions in .

A sequential account of each step, describing details of electron movement, energetics during bond cleavage and bond formation, and the rates of transformation of reactants into products (kinetics) is referred to as:

If the energy of H - atom in the ground state is −E, the velocity of photo electron emitted when a photon having energy Ep striked a stationary Li2+ ion in ground state, is given by:

The phenomenon of radioactivity was discovered by

Columbs force maximum betweenTwo protonTwo electronsOne proton one electron Same everywhere

Classify the following into true solutions and colloidal solutions : Ink, Salt solution, Starch solution, Blood, Sugar solution

Question 25Write down the electron distribution of chlorine atom. How many electrons are there in the L shell?

6.02×1020 molecules of urea are present in 100 mL of its solution. The concentration of solution is: -

21. The number of electrons present in &quotM" shell of silicon is?

Separate the following into physical and chemical changes: Sublimation of a solid, Decomposition of water into hydrogen and oxygen by passing an electric current, Formation of clouds, Making a fruit salad from raw fruits, Dissolving carbon dioxide in water

The series limit for Balmer series of H-spectra is

A hemispherical bowl made of brass has inner diameter 10.5 cm. Find the cost of tin-plating it on the inside at the rate of Rs 4 per 100 cm2.

Which amongst the following is the formula of bisulphate ion?

CH4 and C2H6 belong to the same homologous series and they differ by a unit.

Neils Bohr gave an explanation about the stability of atom. Which of the following laws do you think is applied to the structure of atom?

Question 7 Which of the following contains maximum number of molecules? (a) 1g CO2 (b) 1g N2 (c) 1g H2 (d) 1g CH4

An atom is electrically neutral. How can it be charged?

Subscripts in the chemical formula X2Y3 denotes:A. 2 atoms of X combine with 3 atoms of Y to form X2Y3B. The subscript 2 denotes that valency of X is 2.

40.A proton & alpha particle enter a uniform magnetic field perpendicular with same speed if proton takes 20us to make 5 revolutions then periodic time for alpha particle is 1) 5us 2) 8us 3) 10us 4) 16us Click here to view details:

Following compound can be used as accelerators except

what is the use of ph scale and universal indicator in laboratory

The ratio of e/m for a cathode rayOptions:Varies with a gas in a discharge tubeShould have chosen Is fixedVaries with different electrodesIs maximum if hydrogen is taken

36. what is the difference between a reaction of gas and a homogenous gas phase reaction?

ntIs '3Fe+4H2O*Fe3O4+4H2' a thermal decomposition reaction?How?n

Question 1 (a)Convert the following Temperature to Celsius scale:a. 300 K

A compound of metal (M) and nitrogen (N)with formula M2N3 contains 28% of nitrogen. The atomic mass of metal M is

Which of the following gas is the lightest?

Why is ice at 273k is more effective in cooling than water at the same temperature

A particle moves from A to B in a circular path of radius R covering an angle theta ,find the ratio of the the distance and magnitude of displacement.

At the liquefaction point, a ________ changes into a ________.

A vessel has 6 g of oxygen at a pressure P and temperature 400 K. A small hole is made in so that O2 leaks out. How much O2 leaks out if the pressure is P/2 and temperature 300 K?

Name the process you would use to separate ammonium chloride from a mixture of sodium chloride and ammonium chloride.

what is lone-pair and what is bond pair?

Describe kolbes electrolysis

Which method is used to produce the acid used for etching alphabets on metals industrially?

Haemoglobin contains 0.33% of iron by weight . The molecular weight of haemoglobin is approximately 67200 . The number of iron atoms ( at . wt. of Fe=56) present in one molecule of haemoglobin is

If the total vapour pressure of liquid mixture a and b is given by the equation P = 160 X + 80 then the ratio of vapour pressure of pure liquid a and b is given by

How do atoms attain noble gas configuration ?

Halide of which of the following element always have only one lone pair on central atom :-1) Xe2) Cl3) Se4) N

Why crystallisation is better than evaporation?

Suppose the elements X and Y combine to form two compounds XY_2 and X_3Y_2. When 0.1mole of XY_2 weighs 10g and 0.05 mole of X_{3 }Y_{2 } weighs 9g , the atomic weights of X and Y a

Find the atomic number of an element whose atom has the electronic configuration 2, 8, 4.

Reduction of nitro compounds in nuetral medium gives

A puddle formed by rain water dries up on the same day if there is bright sunshine. Which physical process is involved in this example?

Xenon fluorides and oxyfluorides undergo hydrolysis. Match the following reactions with their products:

Mendeleev predicted the existence of certain elements not known at that time and named two of them as Eka-silicon and Eka-aluminium. How many valence electrons are present in each one of them?

How many compounds or elements with PCl5 give POCl3 as a minor, major or intermediate product?Ag,Sn,H2O,C2H5OH,CH3COOH

Hydrogen has only one orbital so how do the eletrons come from 5th, 4th orbital and create Lyman,bummer rays?

Law of reciprocal proportion

At the liquefaction point, a changes into a .