10223 + Interview Questions in Chemistry Page 5 InterviewSolution

201.	18. Which pair of electrolytes could not be distinguished by products of electrolysis using inert electrodes?1 a)1M CuSO4 solution,1M CuCl2 solution b)1M KCl solution ,1M KI solution c)1M AgNO3 solution,1M Cu(NO3)2 solution d)1M KCl solution ,1M NaCl solution e)1M CuBr2 solution,1M CuSO4 solution
Answer» 18. Which pair of electrolytes could not be distinguished by products of electrolysis using inert electrodes?1 a)1M CuSO4 solution,1M CuCl2 solution b)1M KCl solution ,1M KI solution c)1M AgNO3 solution,1M Cu(NO3)2 solution d)1M KCl solution ,1M NaCl solution e)1M CuBr2 solution,1M CuSO4 solution

Discussion

202.	Which liquid metal is used for making thermometers?
Answer» Which liquid metal is used for making thermometers?

Discussion

203.	Which of the following are solutions? Type in the appropriate number in the order of appearance. If 1, 4 and 5 are solutions, type 145 and not 154 or 541. Be careful while typing the answer. Your answer is ___
Answer» Which of the following are solutions? Type in the appropriate number in the order of appearance. If 1, 4 and 5 are solutions, type 145 and not 154 or 541. Be careful while typing the answer. Your answer is ___

Discussion

204.	Heating mixture of Cu2O and Cu2S will give :
Answer» Heating mixture of $C u_{2} O and C u_{2} S$ will give :

Discussion

205.	Why is the electronic configuration of calcium 2,8,8,2 but not 2,8,9,1?
Answer» Why is the electronic configuration of calcium 2,8,8,2 but not 2,8,9,1?

Discussion

206.	Explain the process of formation of clouds.
Answer» Explain the process of formation of clouds.

Discussion

207.	What is the difference between 2H and H2?
Answer» What is the difference between $2 H$ and $H_{2}$ ?

Discussion

208.	27.a gobar gas plant produces methane and supplies to the families if a family require 15000 kj of energy per day how many days will the quota of 10 kg will last enthalpy of Combustion of ch4 is _1665Kj/mol
Answer» 27.a gobar gas plant produces methane and supplies to the families if a family require 15000 kj of energy per day how many days will the quota of 10 kg will last enthalpy of Combustion of ch4 is _1665Kj/mol

Discussion

209.	Read the following and select one the correct answer. Statement I: Boron always forms covalent bond Statement II: The small size of B3+ favours formation of covalent bond
Answer» Read the following and select one the correct answer. Statement I: Boron always forms covalent bond Statement II: The small size of $B^{3 +}$ favours formation of covalent bond

209.

Read the following and select one the correct answer. Statement I: Boron always forms covalent bond Statement II: The small size of B3+ favours formation of covalent bond

Answer»

Read the following and select one the correct answer.

Statement I: Boron always forms covalent bond

Statement II: The small size of $B^{3 +}$ favours formation of covalent bond

Discussion

210.	How can surface area effect evaporation?
Answer» How can surface area effect evaporation?

Discussion

211.	27. 2 element with atomic number A=20 and B=8 . The formula of the compound made up of A and B is. AB3. AB. A2B
Answer» 27. 2 element with atomic number A=20 and B=8 . The formula of the compound made up of A and B is. AB3. AB. A2B

Discussion

212.	amino acid (1mole)\xrightarrow[△]{NaOH+CaO}gas evolved\xrightarrow[{}]{pass through lime water}salt(0.1999 kg) amino acid having i.2 -NH2 gr. ii.1 -COOH gr iii.2 -COOH gr how to deal with such problem? iv.3 -COOH gr
Answer» amino acid (1mole)\xrightarrow[△]{NaOH+CaO}gas evolved\xrightarrow[{}]{pass through lime water}salt(0.1999 kg) amino acid having i.2 -NH2 gr. ii.1 -COOH gr iii.2 -COOH gr how to deal with such problem? iv.3 -COOH gr

Discussion

213.	Which of the following is not an example of heterogeneous mixture? A. Oil in Water B. Salt in water C. Gun Powder D. Mixture of Sulphur Powder and Iron Fillings
Answer» Which of the following is not an example of heterogeneous mixture? A. Oil in Water B. Salt in water C. Gun Powder D. Mixture of Sulphur Powder and Iron Fillings

213.

Which of the following is not an example of heterogeneous mixture? A. Oil in Water B. Salt in water C. Gun Powder D. Mixture of Sulphur Powder and Iron Fillings

Answer»

Which of the following is not an example of heterogeneous mixture?

A. Oil in Water

B. Salt in water

C. Gun Powder

D. Mixture of Sulphur Powder and Iron Fillings

Discussion

214.	When we add water to milk, they get mixed properly because
Answer» When we add water to milk, they get mixed properly because

Discussion

215.	What are nucleons? How many nucleons are present in phosphorus ? Draw its structure.
Answer» What are nucleons? How many nucleons are present in phosphorus ? Draw its structure.

Discussion

216.	What is a saturated solution? How can an unsaturated solution be changed to a saturated solution without adding any more solute to it?
Answer» What is a saturated solution? How can an unsaturated solution be changed to a saturated solution without adding any more solute to it?

Discussion

217.	Write the chemical formula of aluminium sulphate.
Answer» Write the chemical formula of aluminium sulphate.

Discussion

218.	Applying pressure and reducing temperature can lead to:
Answer» Applying pressure and reducing temperature can lead to:

Discussion

219.	Question 8 Explain with examples (i) Atomic number, (ii) Mass number, (iii) Isotopes and (iv) Isobars. Give any two uses of isotopes.
Answer» Question 8 Explain with examples (i) Atomic number, (ii) Mass number, (iii) Isotopes and (iv) Isobars. Give any two uses of isotopes.

Discussion

220.	The number of waves present in the 4th orbit of H-atom is
Answer» The number of waves present in the 4th orbit of H-atom is

Discussion

221.	how to determine the valency of d block elements (Sc to Zn)
Answer» how to determine the valency of d block elements (Sc to Zn)

Discussion

222.	Between 3 chloropropanoic acid and 2 bromopropanoic acid which is more acidic
Answer» Between 3 chloropropanoic acid and 2 bromopropanoic acid which is more acidic

Discussion

223.	Which of these is/are true about a base?
Answer» Which of these is/are true about a base?

Discussion

224.	Which of the following are isotones with each other?
Answer» Which of the following are isotones with each other?

Discussion

225.	Define radicals.
Answer» Define radicals.

Discussion

226.	What were the proposals given by Thompson's atomic model?
Answer» What were the proposals given by Thompson's atomic model?

Discussion

227.	Question 5:Some changes are listed below, classify them as temporary and permanent.a) Souring of curd b) Ripening of oranges c) The sawing off a piece of wood into two d) Cooking of food e) Heating of milk.
Answer» Question 5: Some changes are listed below, classify them as temporary and permanent. a) Souring of curd b) Ripening of oranges c) The sawing off a piece of wood into two d) Cooking of food e) Heating of milk.

227.

Question 5:Some changes are listed below, classify them as temporary and permanent.a) Souring of curd b) Ripening of oranges c) The sawing off a piece of wood into two d) Cooking of food e) Heating of milk.

Answer»

Question 5:

Some changes are listed below, classify them as temporary and permanent.

a) Souring of curd

b) Ripening of oranges

c) The sawing off a piece of wood into two

d) Cooking of food

e) Heating of milk.

Discussion

228.	What is dry ice, why it is called as dry ice?
Answer» What is dry ice, why it is called as dry ice?

Discussion

229.	It is found that if a neutron suffers an elastic collinear collision with deuterium at rest, fractional loss of its energy is pd, while for its similar collision with carbon nucleus at rest, fractional loss of energy is pcThe values of pd and pc are respectively :
Answer» It is found that if a neutron suffers an elastic collinear collision with deuterium at rest, fractional loss of its energy is $p_{d}$ , while for its similar collision with carbon nucleus at rest, fractional loss of energy is $p_{c}$ The values of $p_{d}$ and $p_{c}$ are respectively :

Discussion

230.	9. If m is the mass of neutron and n is mass of electron, then m:n is (1)1836 (2)1839 (3)1 (4)infinity
Answer» 9. If m is the mass of neutron and n is mass of electron, then m:n is (1)1836 (2)1839 (3)1 (4)infinity

Discussion

231.	20 ml of 0.1 M Bacl2 reacts with 30 ml of 0.2 M Al2(SO4)3 then what is weight of BaSO4 formed ?
Answer» 20 ml of 0.1 M Bacl2 reacts with 30 ml of 0.2 M Al2(SO4)3 then what is weight of BaSO4 formed ?

Discussion

232.	Rapid hardening cement attains early strength due to
Answer» Rapid hardening cement attains early strength due to

Discussion

233.	Which of the following transition elements will exhibit the least enthalpy of atomisation?
Answer» Which of the following transition elements will exhibit the least enthalpy of atomisation?

Discussion

234.	For the redox reactionCr2O2−7+Fe2++H+→Cr3++Fe3++H2OThe correct coefficients of the following for the balanced reaction are
Answer» For the redox reaction $C r_{2} O_{7}^{2 -} + F e^{2 +} + H^{+} \to C r^{3 +} + F e^{3 +} + H_{2} O$ The correct coefficients of the following for the balanced reaction are

Discussion

235.	The number of moles of carbon atoms present in 1.8 g of C6H12O6 is(Given molar mass of C6H12O6 = 180g)
Answer» The number of moles of carbon atoms present in 1.8 g of C6H12O6 is (Given molar mass of C6H12O6 = 180g)

Discussion

236.	What is the effect on boiling point of water when (a) pressure is increased ? (b) impurity is added ?
Answer» What is the effect on boiling point of water when (a) pressure is increased ? (b) impurity is added ?

236.

What is the effect on boiling point of water when (a) pressure is increased ? (b) impurity is added ?

Answer»

What is the effect on boiling point of water when

(a) pressure is increased ?

(b) impurity is added ?

Discussion

237.	Which of the following occupies more volume for the same number of particles?
Answer» Which of the following occupies more volume for the same number of particles?

Discussion

238.	49. If two substances A and B have Pa:Pb=1:2 and have mole fraction in solution as 1:2 then mole fraction of A in vapours is A)0.33 B)0.25 C)0.52 D)0.2
Answer» 49. If two substances A and B have Pa:Pb=1:2 and have mole fraction in solution as 1:2 then mole fraction of A in vapours is A)0.33 B)0.25 C)0.52 D)0.2

Discussion

239.	What is the correct sequence of change in physical state when energy is supplied to a substance?
Answer» What is the correct sequence of change in physical state when energy is supplied to a substance?

Discussion

240.	a uniform metal disc of radius R is taken out of which a disc of diameter R/2 is cut out from the end.Find the centre of mass of remaining part
Answer» a uniform metal disc of radius R is taken out of which a disc of diameter R/2 is cut out from the end.Find the centre of mass of remaining part

Discussion

241.	what is the difference between gram atomic or molecular mass and molar mass
Answer» what is the difference between gram atomic or molecular mass and molar mass

Discussion

242.	What are the factors which are responsible for bringing a change in the physical state of a matter ?
Answer» What are the factors which are responsible for bringing a change in the physical state of a matter ?

Discussion

243.	Good morning sir /mam chalk is a solid but it breaks even applying very little pressure . Why? Give reason
Answer» Good morning sir /mam chalk is a solid but it breaks even applying very little pressure . Why? Give reason

Discussion

244.	In polymerisation reaction only the same monomers combine?
Answer» In polymerisation reaction only the same monomers combine?

Discussion

245.	Aqua regia is a mixture of _____.
Answer» Aqua regia is a mixture of _____.

Discussion

246.	Complete the following chart by writing appropriate words in the boxes marked (a) to (e).
Answer» Complete the following chart by writing appropriate words in the boxes marked (a) to (e).

Discussion

247.	What is a metalloid?
Answer» What is a metalloid?

Discussion

248.	What is red phosphorus?
Answer» What is red phosphorus?

Discussion

249.	What happens to the density of water when it is heated above 4°C?
Answer» What happens to the density of water when it is heated above $4 ° C$ ?

Discussion

250.	what is the difference between molten state and aqueous state?
Answer» what is the difference between molten state and aqueous state?

Discussion

Explore topic-wise InterviewSolutions in .

18. Which pair of electrolytes could not be distinguished by products of electrolysis using inert electrodes?1 a)1M CuSO4 solution,1M CuCl2 solution b)1M KCl solution ,1M KI solution c)1M AgNO3 solution,1M Cu(NO3)2 solution d)1M KCl solution ,1M NaCl solution e)1M CuBr2 solution,1M CuSO4 solution

Which liquid metal is used for making thermometers?​

Which of the following are solutions? Type in the appropriate number in the order of appearance. If 1, 4 and 5 are solutions, type 145 and not 154 or 541. Be careful while typing the answer. Your answer is ___

Heating mixture of Cu2O and Cu2S will give :

Why is the electronic configuration of calcium 2,8,8,2 but not 2,8,9,1?

Explain the process of formation of clouds.

What is the difference between 2H and H2?

27.a gobar gas plant produces methane and supplies to the families if a family require 15000 kj of energy per day how many days will the quota of 10 kg will last enthalpy of Combustion of ch4 is _1665Kj/mol

Read the following and select one the correct answer. Statement I: Boron always forms covalent bond Statement II: The small size of B3+ favours formation of covalent bond

How can surface area effect evaporation?

27. 2 element with atomic number A=20 and B=8 . The formula of the compound made up of A and B is. AB3. AB. A2B

amino acid (1mole)\xrightarrow[△]{NaOH+CaO}gas evolved\xrightarrow[{}]{pass through lime water}salt(0.1999 kg) amino acid having i.2 -NH2 gr. ii.1 -COOH gr iii.2 -COOH gr how to deal with such problem? iv.3 -COOH gr

Which of the following is not an example of heterogeneous mixture? A. Oil in Water B. Salt in water C. Gun Powder D. Mixture of Sulphur Powder and Iron Fillings

When we add water to milk, they get mixed properly because

What are nucleons? How many nucleons are present in phosphorus ? Draw its structure.

What is a saturated solution? How can an unsaturated solution be changed to a saturated solution without adding any more solute to it?

Write the chemical formula of aluminium sulphate.

Applying pressure and reducing temperature can lead to:

Question 8 Explain with examples (i) Atomic number, (ii) Mass number, (iii) Isotopes and (iv) Isobars. Give any two uses of isotopes.

The number of waves present in the 4th orbit of H-atom is

how to determine the valency of d block elements (Sc to Zn)

Between 3 chloropropanoic acid and 2 bromopropanoic acid which is more acidic

Which of these is/are true about a base?

Which of the following are isotones with each other?

Define radicals.

What were the proposals given by Thompson's atomic model?

Question 5:Some changes are listed below, classify them as temporary and permanent.a) Souring of curd b) Ripening of oranges c) The sawing off a piece of wood into two d) Cooking of food e) Heating of milk.

What is dry ice, why it is called as dry ice?

It is found that if a neutron suffers an elastic collinear collision with deuterium at rest, fractional loss of its energy is pd, while for its similar collision with carbon nucleus at rest, fractional loss of energy is pcThe values of pd and pc are respectively :

9. If m is the mass of neutron and n is mass of electron, then m:n is (1)1836 (2)1839 (3)1 (4)infinity

20 ml of 0.1 M Bacl2 reacts with 30 ml of 0.2 M Al2(SO4)3 then what is weight of BaSO4 formed ?

Rapid hardening cement attains early strength due to

Which of the following transition elements will exhibit the least enthalpy of atomisation?

For the redox reactionCr2O2−7+Fe2++H+→Cr3++Fe3++H2OThe correct coefficients of the following for the balanced reaction are

The number of moles of carbon atoms present in 1.8 g of C6H12O6 is(Given molar mass of C6H12O6 = 180g)

What is the effect on boiling point of water when (a) pressure is increased ? (b) impurity is added ?

Which of the following occupies more volume for the same number of particles?

49. If two substances A and B have Pa:Pb=1:2 and have mole fraction in solution as 1:2 then mole fraction of A in vapours is A)0.33 B)0.25 C)0.52 D)0.2

What is the correct sequence of change in physical state when energy is supplied to a substance?

a uniform metal disc of radius R is taken out of which a disc of diameter R/2 is cut out from the end.Find the centre of mass of remaining part

what is the difference between gram atomic or molecular mass and molar mass

What are the factors which are responsible for bringing a change in the physical state of a matter ?

Good morning sir /mam chalk is a solid but it breaks even applying very little pressure . Why? Give reason

In polymerisation reaction only the same monomers combine?

Aqua regia is a mixture of _____.

Complete the following chart by writing appropriate words in the boxes marked (a) to (e).

What is a metalloid?

What is red phosphorus?

What happens to the density of water when it is heated above 4°C?

what is the difference between molten state and aqueous state?

Which liquid metal is used for making thermometers?