15280 + Interview Questions in Chemistry Page 147 InterviewSolution

7301.	23. What are ideal liquids
Answer» 23. What are ideal liquids

Discussion

7302.	A gas at 350k and 15 bar has molar volume 20 percent smaller than that for an ideal gas under the same conditions. The correct option about the gas and its compressibility factor (Z) is(1) Z >1 and attractive forces are dominant(2) Z >1 and repulsive forces are dominant(3) Z
Answer» A gas at 350k and 15 bar has molar volume 20 percent smaller than that for an ideal gas under the same conditions. The correct option about the gas and its compressibility factor (Z) is (1) Z >1 and attractive forces are dominant (2) Z >1 and repulsive forces are dominant (3) Z <1 and attractive forces are dominant (4) Z <1 and repulsive forces are dominant

Discussion

7303.	1M solution of CH3COOH is diluted to x times so that pH of solution is doubled.calculate x.(given Ka=1.8*10^-5.
Answer» 1M solution of CH3COOH is diluted to x times so that pH of solution is doubled.calculate x.(given Ka=1.8*10^-5.

Discussion

7304.	Why is combination reaction apposite of decomposition reaction What is precipitation What is an aqueous solution
Answer» Why is combination reaction apposite of decomposition reaction What is precipitation What is an aqueous solution

Discussion

7305.	0.2g atoms of silicon combine with 21.36 g of chlorine. Find the empirical formula of the compound formed.
Answer» 0.2g atoms of silicon combine with 21.36 g of chlorine. Find the empirical formula of the compound formed.

7305.

0.2g atoms of silicon combine with 21.36 g of chlorine. Find the empirical formula of the compound formed.

Answer»

0.2g atoms of silicon combine with 21.36 g of chlorine.

Find the empirical formula of the compound formed.

Discussion

7306.	Give a test to distinguish butter and cooking oil?
Answer» Give a test to distinguish butter and cooking oil?

Discussion

7307.	100 ml of mixture contain CO anf N2 on complete combustion requires 75 ml of O2.The mixture contains CO+1/2 O2=CO2 N2 + O2=2NO a)35ml N2 b)85mlN2 c)50 ml N2 d)70 ml N
Answer» 100 ml of mixture contain CO anf N2 on complete combustion requires 75 ml of O2.The mixture contains CO+1/2 O2=CO2 N2 + O2=2NO a)35ml N2 b)85mlN2 c)50 ml N2 d)70 ml N

Discussion

7308.	Explain the following terms with examples.a. Endothermic reactionb. Combination reactionc. Balanced equationd. Displacement reaction
Answer» Explain the following terms with examples. a. Endothermic reaction b. Combination reaction c. Balanced equation d. Displacement reaction

Discussion

7309.	The number of types of monochloroalkanes formed by chlorination of isobutane is:
Answer» The number of types of monochloroalkanes formed by chlorination of isobutane is:

Discussion

7310.	29. Amongst the following elements (whose electronic configurations are given below), the one having the highest ionization energy is a. [Ne]3s2 3p1 b. [Ne]3s2 3p3 c. [Ne]3s2 3p2 d. [Ar] 3d10 4s2 4p3
Answer» 29. Amongst the following elements (whose electronic configurations are given below), the one having the highest ionization energy is a. [Ne]3s2 3p1 b. [Ne]3s2 3p3 c. [Ne]3s2 3p2 d. [Ar] 3d10 4s2 4p3

Discussion

7311.	What is the basic principle of solubility?
Answer» What is the basic principle of solubility?

Discussion

7312.	Which of the following is an acidic salt?
Answer» Which of the following is an acidic salt?

Discussion

7313.	Give the name and structural formula of next homologue of HCOOH.
Answer» Give the name and structural formula of next homologue of HCOOH.

Discussion

7314.	A student added few pieces of aluminium metal to two test tubes A and B aqueous solution of iron sulphate and copper sulphate .In the second part of her experiment she added iron metal to another test tubes C and D containing aqueous solution of aluminium sulphate and copper sulphate. In which testtubes will she observes color change?On the basis of this experiment state which one is the most reactive and why?
Answer» A student added few pieces of aluminium metal to two test tubes A and B aqueous solution of iron sulphate and copper sulphate .In the second part of her experiment she added iron metal to another test tubes C and D containing aqueous solution of aluminium sulphate and copper sulphate. In which testtubes will she observes color change?On the basis of this experiment state which one is the most reactive and why?

7314.

A student added few pieces of aluminium metal to two test tubes A and B aqueous solution of iron sulphate and copper sulphate .In the second part of her experiment she added iron metal to another test tubes C and D containing aqueous solution of aluminium sulphate and copper sulphate. In which testtubes will she observes color change?On the basis of this experiment state which one is the most reactive and why?

Answer»

A student added few pieces of aluminium metal to two test tubes A and B aqueous solution of iron sulphate and copper sulphate .In the second part of her experiment she added iron metal to another test tubes C and D containing aqueous solution of aluminium sulphate and copper sulphate.

In which testtubes will she observes color change?On the basis of this experiment state which one is the most reactive and why?

Discussion

7315.	What is meant by periodicity of an element?
Answer» What is meant by periodicity of an element?

Discussion

7316.	The general chemical formula of alkanes is:
Answer» The general chemical formula of alkanes is:

Discussion

7317.	11. How BeO and MgO are covalent nature
Answer» 11. How BeO and MgO are covalent nature

Discussion

7318.	A hydrocarbon contains 86% carbon. Then the hydrocarbon is an
Answer» A hydrocarbon contains $86 %$ carbon. Then the hydrocarbon is an

Discussion

7319.	how to calculate the ph of a solution of some products of different concentration
Answer» how to calculate the ph of a solution of some products of different concentration

Discussion

7320.	Name the organic compound present in vinegar.
Answer» Name the organic compound present in vinegar.

Discussion

7321.	All elements achieve octet configuration by-
Answer» All elements achieve octet configuration by-

Discussion

7322.	The IUPAC name of the given compound is
Answer» The IUPAC name of the given compound is

7322.

The IUPAC name of the given compound is

Answer»

The IUPAC name of the given compound is

Discussion

7323.	Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation.a. 3Li, 14He, 11Na, 15P Which of these elements belong to be period 3?b. 1H, 7N, 20Ca, 16S, 4Be, 18Ar Which of these elements belong tot he second group?c. 7N, 6C, 8O, 5B, 13Al Which is the most electronegative element among these?d. 4Be, 6C, 8O, 5B, 13Al Which is the most electropositive element among these?e. 11Na, 15P, 17Cl, 14Si, 12Mg Which of these has largest atoms?f. 19K, 3Li, 11Na, 4Be Which of these atoms has smallest atomic radius?g. 13Al, 14Si, 11Na, 12Mg, 16S Which of the above elements has the highest metallic character?h. 6C, 3Li, 9F, 7N, 8O Which of the above elements has the highest nonmetallic character?
Answer» Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation. a. ₃Li, ₁₄He, ₁₁Na, ₁₅P Which of these elements belong to be period 3? b. ₁H, ₇N,₂₀Ca, ₁₆S, ₄Be, ₁₈Ar Which of these elements belong tot he second group? c. ₇N, ₆C, ₈O, ₅B, ₁₃Al Which is the most electronegative element among these? d. ₄Be, ₆C, ₈O, ₅B, ₁₃Al Which is the most electropositive element among these? e. ₁₁Na, ₁₅P, ₁₇Cl, ₁₄Si, ₁₂Mg Which of these has largest atoms? f. ₁₉K,₃Li, ₁₁Na, ₄Be Which of these atoms has smallest atomic radius? g. ₁₃Al, ₁₄Si,₁₁Na, ₁₂Mg, ₁₆S Which of the above elements has the highest metallic character? h. ₆C, ₃Li, ₉F,₇N, ₈O Which of the above elements has the highest nonmetallic character?

Discussion

7324.	0.) If radius of a metal atom (A) is 5 pm and radius ofan electronegative atom (B) is 20 pm, then in theunit cell(1) A in octahedral voids, B in FCC unit(2) A in FCC unit, B in tetrahedral void(3) A in BCC unit, B in cubic void(4) A in tetrahedral void, B in FCC unit
Answer» 0.) If radius of a metal atom (A) is 5 pm and radius ofan electronegative atom (B) is 20 pm, then in theunit cell(1) A in octahedral voids, B in FCC unit(2) A in FCC unit, B in tetrahedral void(3) A in BCC unit, B in cubic void(4) A in tetrahedral void, B in FCC unit

Discussion

7325.	Who was the first scientist to came up with a list 33 elements?
Answer» Who was the first scientist to came up with a list 33 elements?

Discussion

7326.	The reaction MN + OP → MP + ON is aa. combination reactionb. decomposition reactionc. single displacement reactiond. double displacement reaction
Answer» The reaction MN + OP → MP + ON is a a. combination reaction b. decomposition reaction c. single displacement reaction d. double displacement reaction

Discussion

7327.	Refining of metals is done by:
Answer» Refining of metals is done by:

Discussion

7328.	An acid reacts with a base to form ___ and water.
Answer» An acid reacts with a base to form ___ and water.

Discussion

7329.	Why is Sodium thiosulphate and sulfuric acid used in the experiment of scattering of light in colloidal solution ?
Answer» Why is Sodium thiosulphate and sulfuric acid used in the experiment of scattering of light in colloidal solution ?

Discussion

7330.	Fill in the blanks:(1) Most of the acidic substances are ________ in taste.(2) Phenolphthalein is ________ type of indicator.(3) The strength of basic substance is represented by ________.(4) pH scale ranges from ________ to ________(5) Acids and bases neutralize each other to form ________ and ________.(6) Sodium or potassium salts of higher fatty acids are termed as ________.(7) In FeSO4.7H2O, H2O represents ________.(8) 10% NaCl is known as ________.
Answer» Fill in the blanks: (1) Most of the acidic substances are ________ in taste. (2) Phenolphthalein is ________ type of indicator. (3) The strength of basic substance is represented by ________. (4) pH scale ranges from ________ to ________ (5) Acids and bases neutralize each other to form ________ and ________. (6) Sodium or potassium salts of higher fatty acids are termed as ________. (7) In FeSO₄.7H₂O, H₂O represents ________. (8) 10% NaCl is known as ________.

7330.

Fill in the blanks:(1) Most of the acidic substances are in taste.(2) Phenolphthalein is type of indicator.(3) The strength of basic substance is represented by .(4) pH scale ranges from to (5) Acids and bases neutralize each other to form and .(6) Sodium or potassium salts of higher fatty acids are termed as .(7) In FeSO4.7H2O, H2O represents .(8) 10% NaCl is known as .

Answer»

Fill in the blanks:

(1) Most of the acidic substances are ________ in taste.

(2) Phenolphthalein is ________ type of indicator.

(3) The strength of basic substance is represented by ________.

(4) pH scale ranges from ________ to ________

(5) Acids and bases neutralize each other to form ________ and ________.

(6) Sodium or potassium salts of higher fatty acids are termed as ________.

(7) In FeSO₄.7H₂O, H₂O represents ________.

(8) 10% NaCl is known as ________.

Discussion

7331.	Do elements in the same group have similar physical properties or not?
Answer» Do elements in the same group have similar physical properties or not?

Discussion

7332.	When a blue coloured copper salt is heated strongly, it forms a white copper salt. The white copper salt can be reconverted into blue copper salt by adding a liquid X.(a) Write the formula of blue copper salt.(b) Write the formula of white copper salt.(c) What substance is lost when blue copper salt is converted into white copper salt?(d) Name the liquid X.
Answer» When a blue coloured copper salt is heated strongly, it forms a white copper salt. The white copper salt can be reconverted into blue copper salt by adding a liquid X. (a) Write the formula of blue copper salt. (b) Write the formula of white copper salt. (c) What substance is lost when blue copper salt is converted into white copper salt? (d) Name the liquid X.

Discussion

7333.	Is zinc sulphide is also Known as flourescent and flourescent and phosphorescent are same
Answer» Is zinc sulphide is also Known as flourescent and flourescent and phosphorescent are same

Discussion

7334.	The gas released when baking soda is mixed with vinegar, is
Answer» The gas released when baking soda is mixed with vinegar, is

Discussion

7335.	Urea [CO(NH2)2] is an important nitrogenous fertilizer and is sold in 50 kg sacks. What is the mass of nitrogen in one sack of urea?
Answer» Urea $[C O (N H_{2})_{2}]$ is an important nitrogenous fertilizer and is sold in 50 kg sacks. What is the mass of nitrogen in one sack of urea?

Discussion

7336.	Write the electronic configuration of the elements with atomic number 13, 14 and 15.
Answer» Write the electronic configuration of the elements with atomic number 13, 14 and 15.

Discussion

7337.	the alkene R-CH=CH2 REACTS WITH B2H6 and the product on oxidation with alkaline hydrogen peroxides produces
Answer» the alkene R-CH=CH2 REACTS WITH B2H6 and the product on oxidation with alkaline hydrogen peroxides produces

Discussion

7338.	What volume of oxygen at STP is required to effect complete combustion of 200cm3 of acetylene and what would be the volume of carbon dioxide formed?
Answer» What volume of oxygen at STP is required to effect complete combustion of 200cm³ of acetylene and what would be the volume of carbon dioxide formed?

Discussion

7339.	Why do aqueous ammonia gives a pungent smell?
Answer» Why do aqueous ammonia gives a pungent smell?

Discussion

7340.	calcium carbonate reacts with aqueous HCL to give cacl2 and CO2 according to the reaction caco3 + HCL gives cacl2 + CO2 + H2O what mass of caco3 is required to completely react with 25 ml of .75 mole HCL
Answer» calcium carbonate reacts with aqueous HCL to give cacl2 and CO2 according to the reaction caco3 + HCL gives cacl2 + CO2 + H2O what mass of caco3 is required to completely react with 25 ml of .75 mole HCL

Discussion

7341.	What volume of a 0.8 M solution contains 100 millimoles of the solute
Answer» What volume of a 0.8 M solution contains 100 millimoles of the solute

Discussion

7342.	Electrolysis of aqueous (CH2COONa)2
Answer» Electrolysis of aqueous (CH2COONa)2

Discussion

7343.	50. name the methodthat is used for refining of nickel
Answer» 50. name the methodthat is used for refining of nickel

Discussion

7344.	Which of the following does not have a coordinate bond?
Answer» Which of the following does not have a coordinate bond?

Discussion

7345.	From the first two letters, what have we so far learned about Skander?
Answer» From the first two letters, what have we so far learned about Skander?

Discussion

7346.	State what happens when a concenarrated solution of sodium chloride is electrolysed? Name the process and justify it. Write the equation of the reaction involved. Write the names of the products obtained. Mention one use of each product.
Answer» State what happens when a concenarrated solution of sodium chloride is electrolysed? Name the process and justify it. Write the equation of the reaction involved. Write the names of the products obtained. Mention one use of each product.

Discussion

7347.	A Noida based Construction Company owns 5 cranes and the value of this asset in its books on April 1, 2001, is Rs. 40,00,000. On October 1, 2001, it sold one of its cranes whose value was Rs. 5,00,000 on April 1, 2001 at a 10 % profit. On the same day. it purchased 2 cranes for Rs. 4,50,000 each. Prepare Cranes account. It closes the books on December 31 and provides for depreciation on 10% written down value.
Answer» A Noida based Construction Company owns 5 cranes and the value of this asset in its books on April 1, 2001, is Rs. 40,00,000. On October 1, 2001, it sold one of its cranes whose value was Rs. 5,00,000 on April 1, 2001 at a 10 % profit. On the same day. it purchased 2 cranes for Rs. 4,50,000 each. Prepare Cranes account. It closes the books on December 31 and provides for depreciation on $10 %$ written down value.

7347.

A Noida based Construction Company owns 5 cranes and the value of this asset in its books on April 1, 2001, is Rs. 40,00,000. On October 1, 2001, it sold one of its cranes whose value was Rs. 5,00,000 on April 1, 2001 at a 10 % profit. On the same day. it purchased 2 cranes for Rs. 4,50,000 each. Prepare Cranes account. It closes the books on December 31 and provides for depreciation on 10% written down value.

Answer»

A Noida based Construction Company owns 5 cranes and the value of this asset in its books on April 1, 2001, is Rs. 40,00,000. On October 1, 2001, it sold one of its cranes whose value was Rs. 5,00,000 on April 1, 2001 at a 10 % profit. On the same day. it purchased 2 cranes for Rs. 4,50,000 each.

Prepare Cranes account. It closes the books on December 31 and provides for depreciation on $10 %$ written down value.

Discussion

7348.	12. How to perdict position of any element in the periodic table
Answer» 12. How to perdict position of any element in the periodic table

Discussion

7349.	Can Metals also form a Covent Bond? Also if they can make, can already formed ionic compounds make a covalent bond?
Answer» Can Metals also form a Covent Bond? Also if they can make, can already formed ionic compounds make a covalent bond?

Discussion

7350.	Sodium nitrite reacts with ferrous sulphate in acidic medium to produce:
Answer» Sodium nitrite reacts with ferrous sulphate in acidic medium to produce:

Discussion

Explore topic-wise InterviewSolutions in .

23. What are ideal liquids

A gas at 350k and 15 bar has molar volume 20 percent smaller than that for an ideal gas under the same conditions. The correct option about the gas and its compressibility factor (Z) is(1) Z >1 and attractive forces are dominant(2) Z >1 and repulsive forces are dominant(3) Z

1M solution of CH3COOH is diluted to x times so that pH of solution is doubled.calculate x.(given Ka=1.8*10^-5.

Why is combination reaction apposite of decomposition reaction What is precipitation What is an aqueous solution

0.2g atoms of silicon combine with 21.36 g of chlorine. Find the empirical formula of the compound formed.

Give a test to distinguish butter and cooking oil?

100 ml of mixture contain CO anf N2 on complete combustion requires 75 ml of O2.The mixture contains CO+1/2 O2=CO2 N2 + O2=2NO a)35ml N2 b)85mlN2 c)50 ml N2 d)70 ml N

Explain the following terms with examples.a. Endothermic reactionb. Combination reactionc. Balanced equationd. Displacement reaction

The number of types of monochloroalkanes formed by chlorination of isobutane is:​

29. Amongst the following elements (whose electronic configurations are given below), the one having the highest ionization energy is a. [Ne]3s2 3p1 b. [Ne]3s2 3p3 c. [Ne]3s2 3p2 d. [Ar] 3d10 4s2 4p3

What is the basic principle of solubility?

Which of the following is an acidic salt?

Give the name and structural formula of next homologue of HCOOH.

What is meant by periodicity of an element?

The general chemical formula of alkanes is:

11. How BeO and MgO are covalent nature

A hydrocarbon contains 86% carbon. Then the hydrocarbon is an

how to calculate the ph of a solution of some products of different concentration

Name the organic compound present in vinegar.

All elements achieve octet configuration by-

The IUPAC name of the given compound is

0.) If radius of a metal atom (A) is 5 pm and radius ofan electronegative atom (B) is 20 pm, then in theunit cell(1) A in octahedral voids, B in FCC unit(2) A in FCC unit, B in tetrahedral void(3) A in BCC unit, B in cubic void(4) A in tetrahedral void, B in FCC unit

Who was the first scientist to came up with a list 33 elements?

The reaction MN + OP → MP + ON is aa. combination reactionb. decomposition reactionc. single displacement reactiond. double displacement reaction

Refining of metals is done by:

An acid reacts with a base to form ___ and water.

Why is Sodium thiosulphate and sulfuric acid used in the experiment of scattering of light in colloidal solution ?

Do elements in the same group have similar physical properties or not?

Is zinc sulphide is also Known as flourescent and flourescent and phosphorescent are same

The gas released when baking soda is mixed with vinegar, is

Urea [CO(NH2)2] is an important nitrogenous fertilizer and is sold in 50 kg sacks. What is the mass of nitrogen in one sack of urea?

Write the electronic configuration of the elements with atomic number 13, 14 and 15.

the alkene R-CH=CH2 REACTS WITH B2H6 and the product on oxidation with alkaline hydrogen peroxides produces

What volume of oxygen at STP is required to effect complete combustion of 200cm3 ​​​​​​ of acetylene and what would be the volume of carbon dioxide formed?

Why do aqueous ammonia gives a pungent smell?

calcium carbonate reacts with aqueous HCL to give cacl2 and CO2 according to the reaction caco3 + HCL gives cacl2 + CO2 + H2O what mass of caco3 is required to completely react with 25 ml of .75 mole HCL

What volume of a 0.8 M solution contains 100 millimoles of the solute

Electrolysis of aqueous (CH2COONa)2

50. name the methodthat is used for refining of nickel

Which of the following does not have a coordinate bond?

From the first two letters, what have we so far learned about Skander?

State what happens when a concenarrated solution of sodium chloride is electrolysed? Name the process and justify it. Write the equation of the reaction involved. Write the names of the products obtained. Mention one use of each product.

12. How to perdict position of any element in the periodic table

Can Metals also form a Covent Bond? Also if they can make, can already formed ionic compounds make a covalent bond?

Sodium nitrite reacts with ferrous sulphate in acidic medium to produce:

The number of types of monochloroalkanes formed by chlorination of isobutane is:

What volume of oxygen at STP is required to effect complete combustion of 200cm3 of acetylene and what would be the volume of carbon dioxide formed?