10223 + Interview Questions in Chemistry Page 77 InterviewSolution

3801.	When the pressure of 2 litres of O2 gas is doubled and its temperature is also doubled from 300K to 600K, the final volume of the gas is
Answer» When the pressure of 2 litres of $O_{2}$ gas is doubled and its temperature is also doubled from 300K to 600K, the final volume of the gas is

Discussion

3802.	The atom that donates electrons is said to have a __ valency.
Answer» The atom that donates electrons is said to have a __ valency.

Discussion

3803.	Define covalent bond.
Answer» Define covalent bond.

Discussion

3804.	If light is an electro magnetic radiation then why doesn't the magnets deflects when there is light in the room?
Answer» If light is an electro magnetic radiation then why doesn't the magnets deflects when there is light in the room?

Discussion

3805.	20. What is molarity of 0.336 volume H2O2 solution ? a)0.004M b)0.005M c)0.01M d)0.03M
Answer» 20. What is molarity of 0.336 volume H2O2 solution ? a)0.004M b)0.005M c)0.01M d)0.03M

Discussion

3806.	If all non metals have negative charge , why only hydrogen has a positive charge?
Answer» If all non metals have negative charge , why only hydrogen has a positive charge?

Discussion

3807.	Choose the correct option from the bracket and explain the statement giving reason.(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)a. To prevent rusting, a layer of ........ metal is applied on iron sheets.b. The conversion of ferrous sulphate to ferric sulphate is ........ reaction.c. When electric current is passed through acidulated water ........ of water takes place.d. Addition of an aqueous solution of ZnSO4 to an aqueous solution of BaCl2 is an example of ....... reaction.
Answer» Choose the correct option from the bracket and explain the statement giving reason. (Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition) a. To prevent rusting, a layer of ........ metal is applied on iron sheets. b. The conversion of ferrous sulphate to ferric sulphate is ........ reaction. c. When electric current is passed through acidulated water ........ of water takes place. d. Addition of an aqueous solution of ZnSO₄ to an aqueous solution of BaCl₂ is an example of ....... reaction.

Discussion

3808.	at equilibrium A(1M)+B(1M)=C(2M)+D(1M) volume of vessel is 1 L.1 mole of d is added from outside .equilibrium was reestablished keeping temperature constant.the amount of c reacts to reestablish equilibrium is
Answer» at equilibrium A(1M)+B(1M)=C(2M)+D(1M) volume of vessel is 1 L.1 mole of d is added from outside .equilibrium was reestablished keeping temperature constant.the amount of c reacts to reestablish equilibrium is

Discussion

3809.	if 220g of glucose is present in 770g of solution, calculated the concentration of solution in mass percentage
Answer» if 220g of glucose is present in 770g of solution, calculated the concentration of solution in mass percentage

Discussion

3810.	Why nh4+ is a lowery bronsted acid despite not being a lewis acid
Answer» Why nh4+ is a lowery bronsted acid despite not being a lewis acid

Discussion

3811.	A metal crystal of atomic mass 40 g mol−1 has a density of 10024 g/cm3. If the metal crystal exists as face centered cubic then calculate edge length of the unit cell (in oA). (Given, Avogadro's number NA=6×1023).
Answer» A metal crystal of atomic mass $40 {g mol}^{- 1}$ has a density of $\frac{100}{24} {g/cm}^{3}$ . If the metal crystal exists as face centered cubic then calculate edge length of the unit cell (in $o A$ ). (Given, Avogadro's number $N_{A} = 6 \times 10^{23}$ ).

Discussion

3812.	How will you separate a mixture of chalk powder and water?
Answer» How will you separate a mixture of chalk powder and water?

Discussion

3813.	What is air? Name any five constituents of air.
Answer» What is air? Name any five constituents of air.

Discussion

3814.	What are called triads
Answer» What are called triads

Discussion

3815.	Which of the following are homogeneous in nature ? (i) ice (ii) wood (iii) soil (iv) air (a) (i) and (iii) (b) (ii) and (iv) (c) (i) and (iv) (d) (iii) and (iv)
Answer» Which of the following are homogeneous in nature ? (i) ice (ii) wood (iii) soil (iv) air (a) (i) and (iii) (b) (ii) and (iv) (c) (i) and (iv) (d) (iii) and (iv)

3815.

Which of the following are homogeneous in nature ? (i) ice (ii) wood (iii) soil (iv) air (a) (i) and (iii) (b) (ii) and (iv) (c) (i) and (iv) (d) (iii) and (iv)

Answer»

Which of the following are homogeneous in nature ?

(i) ice (ii) wood (iii) soil (iv) air

(a) (i) and (iii) (b) (ii) and (iv) (c) (i) and (iv) (d) (iii) and (iv)

Discussion

3816.	84. 300 gm of water at 25 degree Celsius is added to 100 gm of ice at 0 degree Celsius. The final temperature of the mixture is?
Answer» 84. 300 gm of water at 25 degree Celsius is added to 100 gm of ice at 0 degree Celsius. The final temperature of the mixture is?

Discussion

3817.	Question 16Isotopes of an element have:(a) the same physical properties(b) different chemical properties(c) different number of neutrons(d) different atomic numbers
Answer» Question 16 Isotopes of an element have: (a) the same physical properties (b) different chemical properties (c) different number of neutrons (d) different atomic numbers

Discussion

3818.	button cells widely used in watches and other devices the followingIn thereaction takes place:Zns) + Ag,O(s) + H,ouDetermine AG and Ee for the reaction.)Zn2(a)2Ag(s)20 (a)
Answer» button cells widely used in watches and other devices the followingIn thereaction takes place:Zns) + Ag,O(s) + H,ouDetermine AG and Ee for the reaction.)Zn2(a)2Ag(s)20 (a)

Discussion

3819.	The elements in the Dobereiner’s Triads follow: –
Answer» The elements in the Dobereiner’s Triads follow: –

Discussion

3820.	(i) Calculate the mass of 3.011 x 1023 nitrogen molecules.(ii) How many moles are 12.044 x 1023 atoms of He?
Answer» (i) Calculate the mass of 3.011 x 1023 nitrogen molecules. (ii) How many moles are 12.044 x 1023 atoms of He?

Discussion

3821.	Considering the elements B, Al, Mg and K, the correct order of their metallic character is:
Answer» Considering the elements $B, A l, M g$ and $K$ , the correct order of their metallic character is:

Discussion

3822.	Gold is not reactive with oxygen? And why.?? Answer may contain figure please if possible.
Answer» Gold is not reactive with oxygen? And why.?? Answer may contain figure please if possible.

Discussion

3823.	If CO2 doesn't follow henery's law then why carbonated bbeverages are it's application?
Answer» If CO2 doesn't follow henery's law then why carbonated bbeverages are it's application?

Discussion

3824.	Why do solids, liquids and gases have different properties related to shape and volume?
Answer» Why do solids, liquids and gases have different properties related to shape and volume?

Discussion

3825.	39. Find the centre and radius of the circle x power of 2 + y power of 2 +6x-10y-2=0.
Answer» 39. Find the centre and radius of the circle x power of 2 + y power of 2 +6x-10y-2=0.

Discussion

3826.	In 1787, more than a century after Boyle's pioneering result, Jacques Charles conclusively reported that a volume of different gases, when heated by the same temperature rise, increased by the same amount. His contemporary, Joseph Louis Gay-Lusaac extended this research to find that, at a fixed volume, the pressure also linearly increased with temperature. Within a few decades, the first rubber balloons were used by Professor Michael Faraday (who famously discovered electromagnetic induction), in 1824. The usefulness of balloons in demonstrating the gas laws was quickly popularized. Pretend you are a student taking a university entrance paper in 1825, and answer the following - A balloon is filled with 2.5 L nitrogen gas (N2) at the room temperature of 23∘C. The room temperature is slowly increased by 10∘C. What volume will the balloon occupy now?
Answer» In 1787, more than a century after Boyle's pioneering result, Jacques Charles conclusively reported that a volume of different gases, when heated by the same temperature rise, increased by the same amount. His contemporary, Joseph Louis Gay-Lusaac extended this research to find that, at a fixed volume, the pressure also linearly increased with temperature. Within a few decades, the first rubber balloons were used by Professor Michael Faraday (who famously discovered electromagnetic induction), in 1824. The usefulness of balloons in demonstrating the gas laws was quickly popularized. Pretend you are a student taking a university entrance paper in 1825, and answer the following - A balloon is filled with 2.5 L nitrogen gas $(N_{2})$ at the room temperature of $23^{\circ} C .$ The room temperature is slowly increased by $10^{\circ} C .$ What volume will the balloon occupy now?

3826.

In 1787, more than a century after Boyle's pioneering result, Jacques Charles conclusively reported that a volume of different gases, when heated by the same temperature rise, increased by the same amount. His contemporary, Joseph Louis Gay-Lusaac extended this research to find that, at a fixed volume, the pressure also linearly increased with temperature. Within a few decades, the first rubber balloons were used by Professor Michael Faraday (who famously discovered electromagnetic induction), in 1824. The usefulness of balloons in demonstrating the gas laws was quickly popularized. Pretend you are a student taking a university entrance paper in 1825, and answer the following - A balloon is filled with 2.5 L nitrogen gas (N2) at the room temperature of 23∘C. The room temperature is slowly increased by 10∘C. What volume will the balloon occupy now?

Answer»

In 1787, more than a century after Boyle's pioneering result, Jacques Charles conclusively reported that a volume of different gases, when heated by the same temperature rise, increased by the same amount. His contemporary, Joseph Louis Gay-Lusaac extended this research to find that, at a fixed volume, the pressure also linearly increased with temperature. Within a few decades, the first rubber balloons were used by Professor Michael Faraday (who famously discovered electromagnetic induction), in 1824. The usefulness of balloons in demonstrating the gas laws was quickly popularized.

Pretend you are a student taking a university entrance paper in 1825, and answer the following -

A balloon is filled with 2.5 L nitrogen gas $(N_{2})$ at the room temperature of $23^{\circ} C .$ The room temperature is slowly increased by $10^{\circ} C .$ What volume will the balloon occupy now?

Discussion

3827.	Which of the following mixture can be separated completely by the process of sublimation ?(1) fine sand and cane sugar(2) sodium chloride and potassium permanganate(3) potassium chloride and ammonium chloride(4) barium chloride and sodium sulphate
Answer» Which of the following mixture can be separated completely by the process of sublimation ? (1) fine sand and cane sugar (2) sodium chloride and potassium permanganate (3) potassium chloride and ammonium chloride (4) barium chloride and sodium sulphate

Discussion

3828.	what is the effect of polar aprotic and polar protic solvents on elimination reactions(on E1 andE2)?
Answer» what is the effect of polar aprotic and polar protic solvents on elimination reactions(on E1 andE2)?

Discussion

3829.	Calculate v.p lowering of a 0.10m aqueous solution of non electrolyte at 75 degree Celsius
Answer» Calculate v.p lowering of a 0.10m aqueous solution of non electrolyte at 75 degree Celsius

Discussion

3830.	what is formulae for polytetrafluroethene
Answer» what is formulae for polytetrafluroethene

Discussion

3831.	Find the missing letters:-ab_d_aaba_na_badna_b
Answer» Find the missing letters:- ab_d_aaba_na_badna_b

Discussion

3832.	pH if acid rain is sometimes as low as 2. Explain.
Answer» pH if acid rain is sometimes as low as 2. Explain.

Discussion

3833.	A compound has a molecular formula X4O6 . If 10gm of X4O6 has 5.72gm of X , then the atomic mass of X is ?
Answer» A compound has a molecular formula X4O6 . If 10gm of X4O6 has 5.72gm of X , then the atomic mass of X is ?

Discussion

3834.	4. What is the oxidation no of Fe in the compound Ca2(Fe(CN)6).and also give it's iupac name
Answer» 4. What is the oxidation no of Fe in the compound Ca2(Fe(CN)6).and also give it's iupac name

Discussion

3835.	ake a mixture of iron fillings and sulphur powder in a test tube. Heat the test tube strongly till the mixture becomes red hot. Let the mixture cool and add dil. sulphuric acid to it. Which statement is true for the content of the test tube after the experiment?
Answer» ake a mixture of iron fillings and sulphur powder in a test tube. Heat the test tube strongly till the mixture becomes red hot. Let the mixture cool and add dil. sulphuric acid to it. Which statement is true for the content of the test tube after the experiment?

3835.

ake a mixture of iron fillings and sulphur powder in a test tube. Heat the test tube strongly till the mixture becomes red hot. Let the mixture cool and add dil. sulphuric acid to it. Which statement is true for the content of the test tube after the experiment?

Answer»

ake a mixture of iron fillings and sulphur powder in a test tube. Heat the test tube strongly till the mixture becomes red hot. Let the mixture cool and add dil. sulphuric acid to it. Which statement is true for the content of the test tube after the experiment?

Discussion

3836.	Question 7An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. What force might be responsible for the attraction between the balloon and the wall?
Answer» Question 7 An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. What force might be responsible for the attraction between the balloon and the wall?

Discussion

3837.	if the radius of the anion in an ionic solid is 200 pm. What would be the radius of the cation that fits exactly into a cubic hole
Answer» if the radius of the anion in an ionic solid is 200 pm. What would be the radius of the cation that fits exactly into a cubic hole

Discussion

3838.	Which of the following is a decomposition reaction ?
Answer» Which of the following is a decomposition reaction ?

Discussion

3839.	Assertion - boric acid behave as a weak monobasic acid Reason - boric acid contains hydrogen bond in its structure (aiim pattern type option)
Answer» Assertion - boric acid behave as a weak monobasic acid Reason - boric acid contains hydrogen bond in its structure (aiim pattern type option)

Discussion

3840.	कविता के पहले पद को दुबारा पढ़ो। वर्णन पर ध्यान दो। इसे पढ़कर जो चित्र तुम्हारे मन में उभरा उसे बनाओ। बताओ चित्र में तुमने क्या-क्या दर्शाया?
Answer» कविता के पहले पद को दुबारा पढ़ो। वर्णन पर ध्यान दो। इसे पढ़कर जो चित्र तुम्हारे मन में उभरा उसे बनाओ। बताओ चित्र में तुमने क्या-क्या दर्शाया?

Discussion

3841.	Give the empirical formula of :(a) Benzene (b) Glucose (c) Acetylene (d) Acetic acid
Answer» Give the empirical formula of : (a) Benzene (b) Glucose (c) Acetylene (d) Acetic acid

3841.

Give the empirical formula of :(a) Benzene (b) Glucose (c) Acetylene (d) Acetic acid

Answer»

Give the empirical formula of :

(a) Benzene (b) Glucose

(c) Acetylene (d) Acetic acid

Discussion

3842.	Suspensions can be suceesfully seperated through:
Answer» Suspensions can be suceesfully seperated through:

Discussion

3843.	80 ml of a solution contains 20 g of solute. What is the concentration of this solution in terms of mass by volume percentage of the solution?25
Answer» 80 ml of a solution contains 20 g of solute. What is the concentration of this solution in terms of mass by volume percentage of the solution? 25

Discussion

3844.	If the charges of protons and electrons were switched as negative and positive respectively, would the stability be affected? Why?
Answer» If the charges of protons and electrons were switched as negative and positive respectively, would the stability be affected? Why?

Discussion

3845.	Incomplete combustion of hydrocarbons results in the formation of:
Answer» Incomplete combustion of hydrocarbons results in the formation of:

Discussion

3846.	Aqua Regia or Royal liquid is a mixture of
Answer» Aqua Regia or Royal liquid is a mixture of

Discussion

3847.	Which of the following molecules is made up of different kinds of atoms?
Answer» Which of the following molecules is made up of different kinds of atoms?

Discussion

3848.	We heat the ink to obtain the coloured component (dye) in a watch glass (similar to a glass cup). The process involved here is ______ and the component removed from ink-solution is ________.
Answer» We heat the ink to obtain the coloured component (dye) in a watch glass (similar to a glass cup). The process involved here is ______ and the component removed from ink-solution is ________.

Discussion

3849.	calculate volume of O2 formed at STP when 2 moles of MN O2 react with 2 moles of H2O2 in excess of h2so4 as per following reactionMnO2+H2O2+H2SO4 GIVES MNSO4+2H2O+O2
Answer» calculate volume of O2 formed at STP when 2 moles of MN O2 react with 2 moles of H2O2 in excess of h2so4 as per following reaction MnO2+H2O2+H2SO4 GIVES MNSO4+2H2O+O2

Discussion

3850.	The element which has the maximum number of valence electrons is:
Answer» The element which has the maximum number of valence electrons is:

Discussion

Explore topic-wise InterviewSolutions in .

When the pressure of 2 litres of O2 gas is doubled and its temperature is also doubled from 300K to 600K, the final volume of the gas is

The atom that donates electrons is said to have a __ valency.

Define covalent bond.

If light is an electro magnetic radiation then why doesn't the magnets deflects when there is light in the room?

20. What is molarity of 0.336 volume H2O2 solution ? a)0.004M b)0.005M c)0.01M d)0.03M

If all non metals have negative charge , why only hydrogen has a positive charge?

at equilibrium A(1M)+B(1M)=C(2M)+D(1M) volume of vessel is 1 L.1 mole of d is added from outside .equilibrium was reestablished keeping temperature constant.the amount of c reacts to reestablish equilibrium is

if 220g of glucose is present in 770g of solution, calculated the concentration of solution in mass percentage

Why nh4+ is a lowery bronsted acid despite not being a lewis acid

A metal crystal of atomic mass 40 g mol−1 has a density of 10024 g/cm3. If the metal crystal exists as face centered cubic then calculate edge length of the unit cell (in oA). (Given, Avogadro's number NA=6×1023).

How will you separate a mixture of chalk powder and water?

What is air? Name any five constituents of air.

What are called triads

Which of the following are homogeneous in nature ? (i) ice (ii) wood (iii) soil (iv) air (a) (i) and (iii) (b) (ii) and (iv) (c) (i) and (iv) (d) (iii) and (iv)

84. 300 gm of water at 25 degree Celsius is added to 100 gm of ice at 0 degree Celsius. The final temperature of the mixture is?

Question 16Isotopes of an element have:(a) the same physical properties(b) different chemical properties(c) different number of neutrons(d) different atomic numbers

button cells widely used in watches and other devices the followingIn thereaction takes place:Zns) + Ag,O(s) + H,ouDetermine AG and Ee for the reaction.)Zn2(a)2Ag(s)20 (a)

The elements in the Dobereiner’s Triads follow: –

(i) Calculate the mass of 3.011 x 1023 nitrogen molecules.(ii) How many moles are 12.044 x 1023 atoms of He?

Considering the elements B, Al, Mg and K, the correct order of their metallic character is:

Gold is not reactive with oxygen? And why.?? Answer may contain figure please if possible.

If CO2 doesn't follow henery's law then why carbonated bbeverages are it's application?

Why do solids, liquids and gases have different properties related to shape and volume?

39. Find the centre and radius of the circle x power of 2 + y power of 2 +6x-10y-2=0.

Which of the following mixture can be separated completely by the process of sublimation ?(1) fine sand and cane sugar(2) sodium chloride and potassium permanganate(3) potassium chloride and ammonium chloride(4) barium chloride and sodium sulphate

what is the effect of polar aprotic and polar protic solvents on elimination reactions(on E1 andE2)?

Calculate v.p lowering of a 0.10m aqueous solution of non electrolyte at 75 degree Celsius

what is formulae for polytetrafluroethene

Find the missing letters:-ab_d_aaba_na_badna_b

pH if acid rain is sometimes as low as 2. Explain.

A compound has a molecular formula X4O6 . If 10gm of X4O6 has 5.72gm of X , then the atomic mass of X is ?

4. What is the oxidation no of Fe in the compound Ca2(Fe(CN)6).and also give it's iupac name

ake a mixture of iron fillings and sulphur powder in a test tube. Heat the test tube strongly till the mixture becomes red hot. Let the mixture cool and add dil. sulphuric acid to it. Which statement is true for the content of the test tube after the experiment?

Question 7An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. What force might be responsible for the attraction between the balloon and the wall?

if the radius of the anion in an ionic solid is 200 pm. What would be the radius of the cation that fits exactly into a cubic hole

Which of the following is a decomposition reaction ?

Assertion - boric acid behave as a weak monobasic acid Reason - boric acid contains hydrogen bond in its structure (aiim pattern type option)

Give the empirical formula of :(a) Benzene (b) Glucose (c) Acetylene (d) Acetic acid

Suspensions can be suceesfully seperated through:

80 ml of a solution contains 20 g of solute. What is the concentration of this solution in terms of mass by volume percentage of the solution?25

If the charges of protons and electrons were switched as negative and positive respectively, would the stability be affected? Why?

Incomplete combustion of hydrocarbons results in the formation of:

Aqua Regia or Royal liquid is a mixture of

Which of the following molecules is made up of different kinds of atoms?

We heat the ink to obtain the coloured component (dye) in a watch glass (similar to a glass cup). The process involved here is ______ and the component removed from ink-solution is ________.

calculate volume of O2 formed at STP when 2 moles of MN O2 react with 2 moles of H2O2 in excess of h2so4 as per following reactionMnO2+H2O2+H2SO4 GIVES MNSO4+2H2O+O2

The element which has the maximum number of valence electrons is:

We heat the ink to obtain the coloured component (dye) in a watch glass (similar to a glass cup). The process involved here is and the component removed from ink-solution is __.