46295 + Interview Questions in Chemistry

1.	which of the folloeing compound has the higest boi\ln g point HCl H_2SO_4 HBr HNO_3
Answer» which of the folloeing compound has the higest boi\ln g point HCl H_2SO_4 HBr HNO_3

Discussion

2.	the ionisation energy of hydrogen atom is 13.6ev .The energy of the third lowest electronic level in doubly ionised lithium is
Answer» the ionisation energy of hydrogen atom is 13.6ev .The energy of the third lowest electronic level in doubly ionised lithium is

Discussion

3.	In the Down's process the mixture used for electrolysis is
Answer» In the Down's process the mixture used for electrolysis is

Discussion

4.	What is the diagonal relationship?
Answer» What is the diagonal relationship?

Discussion

5.	20. What approximate volume of 0.40 M Ba(OH)2 must be added to 50 ml of 0.30 M NaOH to get a solution in which the molarity of the OH- ions is 0.50 M ?
Answer» 20. What approximate volume of 0.40 M Ba(OH)2 must be added to 50 ml of 0.30 M NaOH to get a solution in which the molarity of the OH- ions is 0.50 M ?

Discussion

6.	pedegry analysis
Answer» pedegry analysis

Discussion

7.	Why are HF & HFO4 considered weak electrolytes?
Answer» Why are HF & HFO₄ considered weak electrolytes?

Discussion

8.	A metal forms two oxides. The higher oxide contains 80% metal.0.72 g of the lower oxide gave 0.8g of the higher oxide when oxidize then the ratio of weight of oxygen that combines with fixed weight of metal in the two oxides will be (a) 2:3 (b)1:2 (c)4:5 (d)3:2
Answer» A metal forms two oxides. The higher oxide contains 80% metal.0.72 g of the lower oxide gave 0.8g of the higher oxide when oxidize then the ratio of weight of oxygen that combines with fixed weight of metal in the two oxides will be (a) 2:3 (b)1:2 (c)4:5 (d)3:2

Discussion

9.	Acetylene reacts with ammonical Cu_{}Cl_2 to give precipitate of- -Red colour -yellow -white -blue Explan?
Answer» Acetylene reacts with ammonical Cu_{}Cl_2 to give precipitate of- -Red colour -yellow -white -blue Explan?

Discussion

10.	FOR ALL COMPLEX NO Z1Z2 SATISFYING [Z1]=12 AND [Z2-3-4I]=5 THE MINIMUM VALUE OF {Z1-Z2}?
Answer» FOR ALL COMPLEX NO Z1Z2 SATISFYING [Z1]=12 AND [Z2-3-4I]=5 THE MINIMUM VALUE OF {Z1-Z2}?

Discussion

11.	What is the difference between bond energy and bond enthalpy
Answer» What is the difference between bond energy and bond enthalpy

Discussion

12.	Calculate the degree of hydrolysis (h) of a 0.1 M sodium acetate solution at 298 K. Given: Ka=1.8×10−5
Answer» Calculate the degree of hydrolysis ( $h$ ) of a $0.1 M$ sodium acetate solution at $298 K$ . Given: $K_{a} = 1.8 \times 10^{- 5}$

Discussion

13.	Find the number of native ores out of given ores. Pyrolusite, Chromite, Siderite, Cassiterite, Calamine, Argentite, Lime stone, Chalcopyrite
Answer» Find the number of native ores out of given ores. Pyrolusite, Chromite, Siderite, Cassiterite, Calamine, Argentite, Lime stone, Chalcopyrite

Discussion

14.	For a radioactive material, number of nuclei decreases by 10% in 20 minutes. Find percentage of decayed nuclei in 1 hour.
Answer» For a radioactive material, number of nuclei decreases by $10 %$ in $20$ minutes. Find percentage of decayed nuclei in $1$ hour.

Discussion

15.	39 No. Of moles of K2Cr2O7 reduced by one mole of Sn2+ ions is ?
Answer» 39 No. Of moles of K2Cr2O7 reduced by one mole of Sn2+ ions is ?

Discussion

16.	A vessel containing 100 g water at 0∘C is left in the middle of a room. In 15 minutes, the temperature of the water rises by 2∘C. When an equal amount of ice is placed in the vessel, it melts in 10 hours. The specific heat of fusion of ice is(Take specific heat capacity of water as 1 cal/g.deg)
Answer» A vessel containing $100 g$ water at $0^{\circ} C$ is left in the middle of a room. In $15$ minutes, the temperature of the water rises by $2^{\circ} C$ . When an equal amount of ice is placed in the vessel, it melts in $10$ hours. The specific heat of fusion of ice is (Take specific heat capacity of water as $1 cal/g.deg$ )

Discussion

17.	Which of the following is the correct bond line representation for the given expanded formula?
Answer» Which of the following is the correct bond line representation for the given expanded formula?

Discussion

18.	If the angle between ¯a=λ^i−3^j−k,¯b=2λ^i+λ^j−k, is acute and ¯b makes obtuse angle with the axes of its coordinate, then λϵ ____.
Answer» If the angle between $¯ a = λ^i - 3^j - k, ¯ b = 2 λ^i + λ^j - k$ , is acute and $¯ b$ makes obtuse angle with the axes of its coordinate, then $λ ϵ$ ____.

Discussion

19.	The molal depression constant for water is 1.86Kkg/mol. If 0.5 mole of sucrose is dissolved in 500g of water the freezing point is depressed by
Answer» The molal depression constant for water is 1.86Kkg/mol. If 0.5 mole of sucrose is dissolved in 500g of water the freezing point is depressed by

Discussion

20.	ntThe graph between log x/m v/s log P is straight line inclined at an angle 45 degree with intercept 0.30 .What will be rate of adsrption at pressure 0.4 atm.n
Answer» ntThe graph between log x/m v/s log P is straight line inclined at an angle 45 degree with intercept 0.30 .What will be rate of adsrption at pressure 0.4 atm.n

Discussion

21.	7.125g of an acid (MW=114) is completely neutrilized by 5g of NaOH (MW=40). What is the basicity of acid?
Answer» 7.125g of an acid (MW=114) is completely neutrilized by 5g of NaOH (MW=40). What is the basicity of acid?

Discussion

22.	How many sulpher atoms are present in 2L of centinormal H2SO4?
Answer» How many sulpher atoms are present in 2L of centinormal H2SO4?

Discussion

23.	Among the following which is not a lewis acid?
Answer» Among the following which is not a lewis acid?

Discussion

24.	HOW TO FIND ROOT OF ANY Q.E
Answer» HOW TO FIND ROOT OF ANY Q.E

Discussion

25.	Let f:W→W be defined as f(n)=n-1, if n is odd and f(n)=n+1, if n is even. Show that f is invertible. Find the inverse of f. Here, W is the set of all whole numbers.
Answer» Let $f : W \to W$ be defined as f(n)=n-1, if n is odd and f(n)=n+1, if n is even. Show that f is invertible. Find the inverse of f. Here, W is the set of all whole numbers.

Discussion

26.	The yellow colour of ZnO and conducting nature produced in heating is due to -
Answer» The yellow colour of ZnO and conducting nature produced in heating is due to -

Discussion

27.	On dissolving 1 mole each of the following acids in 1 L of water, the acid which gives a solution of 1 N strength would be
Answer» On dissolving 1 mole each of the following acids in 1 L of water, the acid which gives a solution of 1 N strength would be

Discussion

28.	For the given disproportionation reaction: H3PO2→PH3+H3PO3The equivalent mass of H3PO2 is :Given : Atomic mass of P=31 u
Answer» For the given disproportionation reaction: $H_{3} P O_{2} \to P H_{3} + H_{3} P O_{3}$ The equivalent mass of $H_{3} P O_{2}$ is : Given : $Atomic mass of P = 31 u$

Discussion

29.	how many nearest and next nearest neighbours respectively does potassium have in BCC lattice
Answer» how many nearest and next nearest neighbours respectively does potassium have in BCC lattice

Discussion

30.	Alizarin belongs to the class of
Answer» Alizarin belongs to the class of

Discussion

31.	what is physical absorption?
Answer» what is physical absorption?

Discussion

32.	The compressibility factor of helium as a real gas is ?
Answer» The compressibility factor of helium as a real gas is ?

Discussion

33.	MnO−4 ions can be reduced in strong alkaline medium to give
Answer» $M n O_{4}^{-}$ ions can be reduced in strong alkaline medium to give

Discussion

34.	Plot the graph between De broglie wavelength and linear mometum?
Answer» Plot the graph between De broglie wavelength and linear mometum?

Discussion

35.	An empty LPG cylinder weighs 14.8 kg. When full, it weighs 29.0 kg and shows a pressure of 3.47 atm. In the course use at ambient temperature, the mass of the cylinder is reduced to 23.0 kg. The final pressure inside the cylinder is____atm.(Nearest Integer)(Assume LPG to be an ideal gas)
Answer» An empty $L P G$ cylinder weighs $14.8 k g$ . When full, it weighs $29.0 k g$ and shows a pressure of $3.47 a t m$ . In the course use at ambient temperature, the mass of the cylinder is reduced to $23.0 k g$ . The final pressure inside the cylinder is____ $a t m$ . (Nearest Integer) (Assume $L P G$ to be an ideal gas)

Discussion

36.	Is there a difference between covalent compounds and covalent solids??
Answer» Is there a difference between covalent compounds and covalent solids??

Discussion

37.	Correct order of ionisation enthalpy among the following is:
Answer» Correct order of ionisation enthalpy among the following is:

Discussion

38.	An organic compound undergoes first order decomposition. The time taken for decomposition to 18 and 110 of its initial concentration are t18 and t110 respectively. What is the value of t18t110×10?(Take log2=0.3)
Answer» An organic compound undergoes first order decomposition. The time taken for decomposition to $\frac{1}{8}$ and $\frac{1}{10}$ of its initial concentration are $t_{\frac{1}{8}}$ and $t_{\frac{1}{10}}$ respectively. What is the value of $\frac{t_{\frac{1}{8}}}{t_{\frac{1}{10}}} \times 10$ ? (Take $l o g 2 = 0.3$ )

Discussion

39.	Alpha. ⁴beta³+alpha³.beta⁴
Answer» Alpha. ⁴beta³+alpha³.beta⁴

Discussion

40.	what is the rank of the word school in a dictionary which was formed by arranging its letters??
Answer» what is the rank of the word school in a dictionary which was formed by arranging its letters??

Discussion

41.	Nylon - 4 is synthesized from which of the following lactams?
Answer» Nylon - 4 is synthesized from which of the following lactams?

Discussion

42.	10 g of heptane (C7H16) is combusted with excess of oxygen. The mass of carbon dioxide formed will be: (The chemical reaction is: C7H14+212O2→7CO2+7H2O)
Answer» 10 g of heptane $(C_{7} H_{16})$ is combusted with excess of oxygen. The mass of carbon dioxide formed will be: $($ The chemical reaction is: $C_{7} H_{14} + \frac{21}{2} O_{2} \to 7 C O_{2} + 7 H_{2} O$ $)$

Discussion

43.	Volume Strength of 1.5N H2 O2 solution is
Answer» Volume Strength of 1.5N H2 O2 solution is

Discussion

44.	7. If propene reacts with HBr in presence of benzoyl peroxide, then prove that one of the possible product is
Answer» 7. If propene reacts with HBr in presence of benzoyl peroxide, then prove that one of the possible product is

Discussion

45.	The major product formed in the following reaction is:
Answer» The major product formed in the following reaction is:

Discussion

46.	The hydroxides and carbonates of sodium and potassium are easily soluble in water while the corresponding salts of magnesium and calcium are sparingly soluble in water. Explain.
Answer» The hydroxides and carbonates of sodium and potassium are easily soluble in water while the corresponding salts of magnesium and calcium are sparingly soluble in water. Explain.

Discussion

47.	An ionic solid Na+A− crystallises in a rock salt type structure. 2.592 g of the ionic solid salt Na+A−is dissolved in water to make a 2 litre solution. The pH of this solution is 8. If distance between cation and anion is 300 pm. The density of the ionic solid (in gm/cm3) is. (Given : pKw= 13, pKa(HA) = 5, NA=6×1023
Answer» An ionic solid $N a^{+} A^{-}$ crystallises in a rock salt type structure. 2.592 g of the ionic solid salt $N a^{+} A^{-}$ is dissolved in water to make a 2 litre solution. The pH of this solution is 8. If distance between cation and anion is 300 pm. The density of the ionic solid (in gm/ $c m^{3}$ ) is. (Given : $p K_{w}$ = 13, $p K_{a}$ (HA) = 5, $N_{A} = 6 \times 10^{23}$

Discussion

48.	54. Density of an object is 3 gram/cm.cm.cm express it in kg/m.m.m
Answer» 54. Density of an object is 3 gram/cm.cm.cm express it in kg/m.m.m

Discussion

49.	if p,q,r are in ap then p-q/q-r=
Answer» if p,q,r are in ap then p-q/q-r=

Discussion

50.	Equivalent mass of H3PO4 for the given reaction, H3PO4 + Ca[OH]2 -- CaHPO4 + 2 H2O
Answer» Equivalent mass of H3PO4 for the given reaction, H3PO4 + Ca[OH]2 -- CaHPO4 + 2 H2O

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

which of the folloeing compound has the higest boi\ln g point HCl H_2SO_4 HBr HNO_3

the ionisation energy of hydrogen atom is 13.6ev .The energy of the third lowest electronic level in doubly ionised lithium is

In the Down's process the mixture used for electrolysis is

What is the diagonal relationship?

20. What approximate volume of 0.40 M Ba(OH)2 must be added to 50 ml of 0.30 M NaOH to get a solution in which the molarity of the OH- ions is 0.50 M ?

pedegry analysis

Why are HF & HFO4 considered weak electrolytes?

A metal forms two oxides. The higher oxide contains 80% metal.0.72 g of the lower oxide gave 0.8g of the higher oxide when oxidize then the ratio of weight of oxygen that combines with fixed weight of metal in the two oxides will be (a) 2:3 (b)1:2 (c)4:5 (d)3:2

Acetylene reacts with ammonical Cu_{}Cl_2 to give precipitate of- -Red colour -yellow -white -blue Explan?

FOR ALL COMPLEX NO Z1Z2 SATISFYING [Z1]=12 AND [Z2-3-4I]=5 THE MINIMUM VALUE OF {Z1-Z2}?

What is the difference between bond energy and bond enthalpy

Calculate the degree of hydrolysis (h) of a 0.1 M sodium acetate solution at 298 K. Given: Ka=1.8×10−5

Find the number of native ores out of given ores. Pyrolusite, Chromite, Siderite, Cassiterite, Calamine, Argentite, Lime stone, Chalcopyrite

For a radioactive material, number of nuclei decreases by 10% in 20 minutes. Find percentage of decayed nuclei in 1 hour.

39 No. Of moles of K2Cr2O7 reduced by one mole of Sn2+ ions is ?

A vessel containing 100 g water at 0∘C is left in the middle of a room. In 15 minutes, the temperature of the water rises by 2∘C. When an equal amount of ice is placed in the vessel, it melts in 10 hours. The specific heat of fusion of ice is(Take specific heat capacity of water as 1 cal/g.deg)

Which of the following is the correct bond line representation for the given expanded formula?

If the angle between ¯a=λ^i−3^j−k,¯b=2λ^i+λ^j−k, is acute and ¯b makes obtuse angle with the axes of its coordinate, then λϵ ____.

The molal depression constant for water is 1.86Kkg/mol. If 0.5 mole of sucrose is dissolved in 500g of water the freezing point is depressed by

ntThe graph between log x/m v/s log P is straight line inclined at an angle 45 degree with intercept 0.30 .What will be rate of adsrption at pressure 0.4 atm.n

7.125g of an acid (MW=114) is completely neutrilized by 5g of NaOH (MW=40). What is the basicity of acid?

How many sulpher atoms are present in 2L of centinormal H2SO4?

Among the following which is not a lewis acid?

HOW TO FIND ROOT OF ANY Q.E

Let f:W→W be defined as f(n)=n-1, if n is odd and f(n)=n+1, if n is even. Show that f is invertible. Find the inverse of f. Here, W is the set of all whole numbers.

The yellow colour of ZnO and conducting nature produced in heating is due to -

On dissolving 1 mole each of the following acids in 1 L of water, the acid which gives a solution of 1 N strength would be

For the given disproportionation reaction: H3PO2→PH3+H3PO3The equivalent mass of H3PO2 is :Given : Atomic mass of P=31 u

how many nearest and next nearest neighbours respectively does potassium have in BCC lattice

Alizarin belongs to the class of

what is physical absorption?

The compressibility factor of helium as a real gas is ?

MnO−4 ions can be reduced in strong alkaline medium to give

Plot the graph between De broglie wavelength and linear mometum?

An empty LPG cylinder weighs 14.8 kg. When full, it weighs 29.0 kg and shows a pressure of 3.47 atm. In the course use at ambient temperature, the mass of the cylinder is reduced to 23.0 kg. The final pressure inside the cylinder is____atm.(Nearest Integer)(Assume LPG to be an ideal gas)

Is there a difference between covalent compounds and covalent solids??

Correct order of ionisation enthalpy among the following is:

An organic compound undergoes first order decomposition. The time taken for decomposition to 18 and 110 of its initial concentration are t18 and t110 respectively. What is the value of t18t110×10?(Take log2=0.3)

Alpha. ⁴beta³+alpha³.beta⁴

what is the rank of the word school in a dictionary which was formed by arranging its letters??

Nylon - 4 is synthesized from which of the following lactams?

10 g of heptane (C7H16) is combusted with excess of oxygen. The mass of carbon dioxide formed will be: (The chemical reaction is: C7H14+212O2→7CO2+7H2O)

Volume Strength of 1.5N H2 O2 solution is

7. If propene reacts with HBr in presence of benzoyl peroxide, then prove that one of the possible product is

The major product formed in the following reaction is:

The hydroxides and carbonates of sodium and potassium are easily soluble in water while the corresponding salts of magnesium and calcium are sparingly soluble in water. Explain.

54. Density of an object is 3 gram/cm.cm.cm express it in kg/m.m.m

if p,q,r are in ap then p-q/q-r=

Equivalent mass of H3PO4 for the given reaction, H3PO4 + Ca[OH]2 -- CaHPO4 + 2 H2O