2600 + Interview Questions in Chemistry Page 52 InterviewSolution

2551.	The osmotic pressure of a 0.1 M aqueous solution of MgCl2 at 300 K is 4.92 atm. What will be the percentage ionisation of the salt?
Answer» The osmotic pressure of a $0.1 M$ aqueous solution of $M g C l_{2}$ at $300 K$ is $4.92 atm$ . What will be the percentage ionisation of the salt?

Discussion

2552.	Identify the least stable ion among the following.
Answer» Identify the least stable ion among the following.

Discussion

2553.	Which of the following reactions occurs at the cathode of a common dry cell[NCERT 1978]
Answer» Which of the following reactions occurs at the cathode of a common dry cell [NCERT 1978]

2553.

Which of the following reactions occurs at the cathode of a common dry cell[NCERT 1978]

Answer»

Which of the following reactions occurs at the cathode of a common dry cell

[NCERT 1978]

Discussion

2554.	In a sad twist you inherit “only” a copper mine while your siblings inherit gold and diamond mines. On inspection you come to know that your copper mine is fully equipped to extract the metal from the ore and also that it consists only of Chalcopyrite. Finely powdered, pulverized ore is ready to be processed. What would be your next step?
Answer» In a sad twist you inherit “only” a copper mine while your siblings inherit gold and diamond mines. On inspection you come to know that your copper mine is fully equipped to extract the metal from the ore and also that it consists only of Chalcopyrite. Finely powdered, pulverized ore is ready to be processed. What would be your next step?

Discussion

2555.	Which of the following is correct order with respect to acidic nature :
Answer» Which of the following is correct order with respect to acidic nature :

Discussion

2556.	Which of the following order is correct if we consider +I power?Tertiary-alkyl secondary-Alkyl primary-alkyl I II III
Answer» Which of the following order is correct if we consider +I power? Tertiary-alkyl secondary-Alkyl primary-alkyl I II III

2556.

Which of the following order is correct if we consider +I power?Tertiary-alkyl secondary-Alkyl primary-alkyl I II III

Answer»

Which of the following order is correct if we consider +I power?

Tertiary-alkyl secondary-Alkyl primary-alkyl

I II III

Discussion

2557.	The molar solubility of Cd(OH)2 is 1.84×10−5M in water. The expected solubility of Cd(OH)2 in a buffer solution of pH=12 is:
Answer» The molar solubility of $C d (O H)_{2}$ is $1.84 \times 10^{- 5} M$ in water. The expected solubility of $C d (O H)_{2}$ in a buffer solution of $p H = 12$ is:

Discussion

2558.	Calculate Molarity of a solution having 3.42 gm sucrose in 500 mL - solution.
Answer» Calculate Molarity of a solution having 3.42 gm sucrose in 500 mL - solution.

Discussion

2559.	A cylinder containing cooking gas can withstand a pressure of 15 atm. The pressure gauge of the cylinder indicates 12 atm at 27∘C. Due to a sudden fire in the building, the temperature starts rising. At what temperature will the cylinder explode?
Answer» A cylinder containing cooking gas can withstand a pressure of 15 atm. The pressure gauge of the cylinder indicates 12 atm at $27^{\circ} C$ . Due to a sudden fire in the building, the temperature starts rising. At what temperature will the cylinder explode?

Discussion

2560.	The vapour pressure of pure benzene C6H6 at 50∘C is 268 torr. How many moles on non-volatile solute per mole of benzene is required to prepare a solution of benzene having a vapour pressure of 167 torr at 50∘C?
Answer» The vapour pressure of pure benzene $C_{6} H_{6}$ at $50^{\circ} C$ is 268 torr. How many moles on non-volatile solute per mole of benzene is required to prepare a solution of benzene having a vapour pressure of 167 torr at $50^{\circ} C$ ?

Discussion

2561.	C(OH)4 is unstable because a carbon atom cannot hold more than one -OH groups but Si(OH)4 is a stable compound because
Answer» $C (O H)_{4}$ is unstable because a carbon atom cannot hold more than one -OH groups but $S i (O H)_{4}$ is a stable compound because

Discussion

2562.	The electrophile involved in the above reaction is:
Answer» The electrophile involved in the above reaction is:

2562.

The electrophile involved in the above reaction is:

Answer»

The electrophile involved in the above reaction is:

Discussion

2563.	Which of the following is the correct expression for ΔS in case of isochoric process?
Answer» Which of the following is the correct expression for $Δ S$ in case of isochoric process?

Discussion

2564.	Which one of the following is most acidic?
Answer» Which one of the following is most acidic?

Discussion

2565.	Predict the nature of P in the following reaction
Answer» Predict the nature of P in the following reaction

Discussion

2566.	The equilibrium, SO2Cl2(g)⇌SO2(g)+Cl2(g) is attained at 25∘C in a closed container and an inert gas, helium, is introduced. Which of the following statements are correct?
Answer» The equilibrium, $S O_{2} C l_{2} (g) ⇌ S O_{2} (g) + C l_{2} (g)$ is attained at $25^{\circ} C$ in a closed container and an inert gas, helium, is introduced. Which of the following statements are correct?

Discussion

2567.	Na+.Mg2+,Al3+ and Si4+ are isoelectronic. The order of their ionic size is
Answer» $N a^{+} . M g^{2 +}, A l^{3 +}$ and $S i^{4 +}$ are isoelectronic. The order of their ionic size is

Discussion

2568.	Identify A and predict the type of reaction:
Answer» Identify A and predict the type of reaction:

Discussion

2569.	Phosphine is
Answer» Phosphine is

Discussion

2570.	No. of moles of water in 488.6 g of BaCl2.2H2O are (molecular weight of BaCl2.2H2O = 244.33)
Answer» No. of moles of water in $488.6 g$ of $B a C l_{2} .2 H_{2} O$ are (molecular weight of $B a C l_{2} .2 H_{2} O = 244.33$ )

Discussion

2571.	A given solution of H2SO4 is labelled as 49% (w/w), then the correct statement regarding the solution is (d=1.3 g/mL)
Answer» A given solution of $H_{2} S O_{4}$ is labelled as 49% (w/w), then the correct statement regarding the solution is $(d = 1.3 g/mL)$

Discussion

2572.	Adsorbed hydrogen by palladium is known as:
Answer» Adsorbed hydrogen by palladium is known as:

Discussion

2573.	Which of the following gives CH4 on hydrolysis?
Answer» Which of the following gives CH₄on hydrolysis?

Discussion

2574.	For the reaction, CO(g)+Cl2(g)⇌COCl2(g) the KpKc is equal to
Answer» For the reaction, $C O (g) + C l_{2} (g) ⇌ C O C l_{2} (g)$ the $\frac{K_{p}}{K_{c}}$ is equal to

Discussion

2575.	Which of the following most accurately describes the first step in the reaction of HCl with but-1-ene?
Answer» Which of the following most accurately describes the first step in the reaction of $H C l$ with but-1-ene?

Discussion

2576.	A sample of a gas contains N1 molecules and the total kinetic energy at −123∘C is E1 ergs. Another sample of a gas at 27∘C has a total kinetic energy as 2E1 ergs. Assuming gases to be ideal, the number of gas molecules in the second sample will be:
Answer» A sample of a gas contains $N_{1}$ molecules and the total kinetic energy at $- 123^{\circ}$ C is $E_{1}$ ergs. Another sample of a gas at $27^{\circ}$ C has a total kinetic energy as $2 E_{1}$ ergs. Assuming gases to be ideal, the number of gas molecules in the second sample will be:

Discussion

2577.	The correct IUPAC name for the given compound is :
Answer» The correct IUPAC name for the given compound is :

Discussion

2578.	Which of the following statements are true for Leaching?
Answer» Which of the following statements are true for Leaching?

Discussion

2579.	An 8% aqueous solution of urea (by mass of solvent) has an elevation in boiling point of x1. 20% aqueous solution of glucose (by mass of solvent) has an elevation in boiling point of x2. If these two solutions are mixed, then the elevation in boiling point is x3.Then,
Answer» An 8% aqueous solution of urea (by mass of solvent) has an elevation in boiling point of $x_{1}$ . 20% aqueous solution of glucose (by mass of solvent) has an elevation in boiling point of $x_{2}$ . If these two solutions are mixed, then the elevation in boiling point is $x_{3}$ . Then,

Discussion

2580.	Which of the following will not show geometrical isomerism?
Answer» Which of the following will not show geometrical isomerism?

Discussion

2581.	Which of the following sets of quantum numbers represent the highest energy of an atom ?
Answer» Which of the following sets of quantum numbers represent the highest energy of an atom ?

Discussion

2582.	Which one of the following methods is best suited for the concentration of Bauxite ore?
Answer» Which one of the following methods is best suited for the concentration of Bauxite ore?

Discussion

2583.	When cobalt(II) chloride is dissolved in water, a pink solution A is formed. When ammonia is passed through the solution, orange red solution is obtained. Then the sum of the coordination number and the oxidation state of central metal in the yellow coloured solution is :
Answer» When cobalt $(I I)$ chloride is dissolved in water, a pink solution A is formed. When ammonia is passed through the solution, orange red solution is obtained. Then the sum of the coordination number and the oxidation state of central metal in the yellow coloured solution is :

Discussion

2584.	The double helical structure of DNA was proposed by
Answer» The double helical structure of DNA was proposed by

Discussion

2585.	Which of the following is/are chain isomer(s) of the alkane C6H14?
Answer» Which of the following is/are chain isomer(s) of the alkane $C_{6} H_{14}$ ?

Discussion

2586.	Glycerol is used [Kurukshetra CET 2002]
Answer» Glycerol is used [Kurukshetra CET 2002]

Discussion

2587.	The set of elements each of which could form stable, covalent, hydrogen-bonded hydrides is:
Answer» The set of elements each of which could form stable, covalent, hydrogen-bonded hydrides is:

Discussion

2588.	The compound that produces an oily nitrosoamine on reaction with aq. HONO at low temperature is:
Answer» The compound that produces an oily nitrosoamine on reaction with aq. HONO at low temperature is:

Discussion

2589.	The reaction of propene with HOCl gives major product as:
Answer» The reaction of propene with $H O C l$ gives major product as:

Discussion

2590.	The above reaction and reagent are respectively -
Answer» The above reaction and reagent are respectively -

Discussion

2591.	Which of the following do not show geometrical isomerism?
Answer» Which of the following do not show geometrical isomerism?

Discussion

2592.	Uncertainty in position of a 0.25 g particle is 10−5. Uncertainty in velocity of that particle is: (h=6.6×10−34J s)
Answer» Uncertainty in position of a $0.25 g$ particle is $10^{- 5}$ . Uncertainty in velocity of that particle is: ( $h = 6.6 \times 10^{- 34} J s)$

Discussion

2593.	Buna-S is a copolymer of ________.
Answer» Buna-S is a copolymer of ________.

Discussion

2594.	A 50 mL 1.92% w/v solution of a metal ion Mn+ at. wt =60 was treated with 5.32 g hydrazinehydrate (N2H4.H2O) 90% pure and the mixture was saturated with CO2 gas when entire metal gets pecipitated as a complex [M(NH2−NHCOO)n] the complex was filtered of and the filterate was titrated with M/10 KIO3 in the presence of conc. HCl according to the following equation :N2H4+IO−3+2H++Cl−→ICl+3H2O+N2↑The volume of M/10 KIO3 solution needed for end point to arrive was 480 mL. Find the value of n.
Answer» A $50 m L$ $1.92 %$ $w / v$ solution of a metal ion $M^{n +} a t . w t = 60$ was treated with $5.32 g$ hydrazinehydrate $(N_{2} H_{4} . H_{2} O) 90 % p u r e$ and the mixture was saturated with $C O_{2}$ gas when entire metal gets pecipitated as a complex $[M (N H_{2} - N H C O O)_{n}]$ the complex was filtered of and the filterate was titrated with $M / 10 K I O_{3}$ in the presence of $c o n c . H C l$ according to the following equation : $N_{2} H_{4} + I O_{3}^{-} + 2 H^{+} + C l^{-} \to I C l + 3 H_{2} O + N_{2} ↑$ The volume of $M / 10 K I O_{3}$ solution needed for end point to arrive was $480 m L$ . Find the value of $n$ .

Discussion

2595.	100 mL of an H2SO4 solution that has a molarity of 1 M and density of 1.50 g/mL is mixed with 400 mL of water. If the final density of the resulting solution is 1.25 g/mL, the final molarity of the H2SO4 solution is:
Answer» $100 mL$ of an $H_{2} S O_{4}$ solution that has a molarity of $1 M$ and density of $1.50 g/mL$ is mixed with $400 mL$ of water. If the final density of the resulting solution is $1.25 g/mL$ , the final molarity of the $H_{2} S O_{4}$ solution is:

Discussion

2596.	Proteins fulfil several functions in living systems. An example of a protein which acts as a hormone is [KCET 1985]
Answer» Proteins fulfil several functions in living systems. An example of a protein which acts as a hormone is [KCET 1985]

2596.

Proteins fulfil several functions in living systems. An example of a protein which acts as a hormone is [KCET 1985]

Answer»

Proteins fulfil several functions in living systems. An example of a protein which acts as a hormone is

[KCET 1985]

Discussion

2597.	Which of the following pair is isodiapheres?
Answer» Which of the following pair is isodiapheres?

Discussion

2598.	On bombarding 7N14 with α -particles, the nuclei of the product formed after the release of a proton will be or In nuclear reaction 7N14+2He4→zXA+1H1, the term zXA represents
Answer» On bombarding $_{7} N^{14}$ with $α$ -particles, the nuclei of the product formed after the release of a proton will be or In nuclear reaction $_{7} N^{14} +_{2} H e^{4} \to_{z} X^{A} +_{1} H^{1}$ , the term $_{z} X^{A}$ represents

Discussion

2599.	Define sigma and pi bonds.
Answer» Define sigma and pi bonds.

Discussion

Explore topic-wise InterviewSolutions in .

The osmotic pressure of a 0.1 M aqueous solution of MgCl2 at 300 K is 4.92 atm. What will be the percentage ionisation of the salt?

Identify the least stable ion among the following.

Which of the following reactions occurs at the cathode of a common dry cell[NCERT 1978]

Which of the following is correct order with respect to acidic nature :

Which of the following order is correct if we consider +I power?Tertiary-alkyl secondary-Alkyl primary-alkyl I II III

The molar solubility of Cd(OH)2 is 1.84×10−5M in water. The expected solubility of Cd(OH)2 in a buffer solution of pH=12 is:

Calculate Molarity of a solution having 3.42 gm sucrose in 500 mL - solution.

A cylinder containing cooking gas can withstand a pressure of 15 atm. The pressure gauge of the cylinder indicates 12 atm at 27∘C. Due to a sudden fire in the building, the temperature starts rising. At what temperature will the cylinder explode?

The vapour pressure of pure benzene C6H6 at 50∘C is 268 torr. How many moles on non-volatile solute per mole of benzene is required to prepare a solution of benzene having a vapour pressure of 167 torr at 50∘C?

C(OH)4 is unstable because a carbon atom cannot hold more than one -OH groups but Si(OH)4 is a stable compound because

The electrophile involved in the above reaction is:

Which of the following is the correct expression for ΔS in case of isochoric process?

Which one of the following is most acidic?

Predict the nature of P in the following reaction

The equilibrium, SO2Cl2(g)⇌SO2(g)+Cl2(g) is attained at 25∘C in a closed container and an inert gas, helium, is introduced. Which of the following statements are correct?

Na+.Mg2+,Al3+ and Si4+ are isoelectronic. The order of their ionic size is

Identify A and predict the type of reaction:

Phosphine is

No. of moles of water in 488.6 g of BaCl2.2H2O are (molecular weight of BaCl2.2H2O = 244.33)

A given solution of H2SO4 is labelled as 49% (w/w), then the correct statement regarding the solution is (d=1.3 g/mL)

Adsorbed hydrogen by palladium is known as:

Which of the following gives CH4 on hydrolysis?

For the reaction, CO(g)+Cl2(g)⇌COCl2(g) the KpKc is equal to

Which of the following most accurately describes the first step in the reaction of HCl with but-1-ene?

A sample of a gas contains N1 molecules and the total kinetic energy at −123∘C is E1 ergs. Another sample of a gas at 27∘C has a total kinetic energy as 2E1 ergs. Assuming gases to be ideal, the number of gas molecules in the second sample will be:

The correct IUPAC name for the given compound is :

Which of the following statements are true for Leaching?

An 8% aqueous solution of urea (by mass of solvent) has an elevation in boiling point of x1. 20% aqueous solution of glucose (by mass of solvent) has an elevation in boiling point of x2. If these two solutions are mixed, then the elevation in boiling point is x3.Then,

Which of the following will not show geometrical isomerism?

Which of the following sets of quantum numbers represent the highest energy of an atom ?

Which one of the following methods is best suited for the concentration of Bauxite ore?

When cobalt(II) chloride is dissolved in water, a pink solution A is formed. When ammonia is passed through the solution, orange red solution is obtained. Then the sum of the coordination number and the oxidation state of central metal in the yellow coloured solution is :

The double helical structure of DNA was proposed by

Which of the following is/are chain isomer(s) of the alkane C6H14?

Glycerol is used [Kurukshetra CET 2002]

The set of elements each of which could form stable, covalent, hydrogen-bonded hydrides is:

The compound that produces an oily nitrosoamine on reaction with aq. HONO at low temperature is:

The reaction of propene with HOCl gives major product as:

The above reaction and reagent are respectively -

Which of the following do not show geometrical isomerism?

Uncertainty in position of a 0.25 g particle is 10−5. Uncertainty in velocity of that particle is: (h=6.6×10−34J s)

Buna-S is a copolymer of ________.

100 mL of an H2SO4 solution that has a molarity of 1 M and density of 1.50 g/mL is mixed with 400 mL of water. If the final density of the resulting solution is 1.25 g/mL, the final molarity of the H2SO4 solution is:

Proteins fulfil several functions in living systems. An example of a protein which acts as a hormone is [KCET 1985]

Which of the following pair is isodiapheres?

On bombarding 7N14 with α -particles, the nuclei of the product formed after the release of a proton will be or In nuclear reaction 7N14+2He4→zXA+1H1, the term zXA represents

Define sigma and pi bonds.