46295 + Interview Questions in Chemistry

1.	Sodium hydroxide on reaction with amphoteric oxides like. SnO + 2NaOH → ____+ H2O to form.
Answer» Sodium hydroxide on reaction with amphoteric oxides like. $S n O + 2 N a O H \to$ ____ $+ H_{2} O$ to form.

1.

Sodium hydroxide on reaction with amphoteric oxides like. SnO + 2NaOH → ____+ H2O to form.

Answer»

Sodium hydroxide on reaction with amphoteric oxides like.

$S n O + 2 N a O H \to$ ____ $+ H_{2} O$ to form.

2.	The number of geometrical isomer of [Co(NH3)3(NO3)3] are
Answer» The number of geometrical isomer of $[C o (N H_{3})_{3} (N O_{3})_{3}]$ are

Discussion

3.	Identify the major product Y:
Answer» Identify the major product Y:

Discussion

4.	Is dielectric depends on density of the substance of the medium?
Answer» Is dielectric depends on density of the substance of the medium?

Discussion

5.	Calculate the molecular formula of the compound which contains 12% Mg and 88% Br by weight, if the molecular weight of compound is 184 g.
Answer» Calculate the molecular formula of the compound which contains 12% Mg and 88% Br by weight, if the molecular weight of compound is 184 g.

Discussion

6.	The mass of a box measured by a grocer's balance is 2.300 kg .Two gold pieces of masses 20.15 g and 20.17 g are added to the box. What is the total mass of box to correct significant figures ?
Answer» The mass of a box measured by a grocer's balance is 2.300 kg .Two gold pieces of masses 20.15 g and 20.17 g are added to the box. What is the total mass of box to correct significant figures ?

Discussion

7.	The radius of Na+ cation is less than that of Na atom. Give reason.
Answer» The radius of $N a^{+}$ cation is less than that of Na atom. Give reason.

Discussion

8.	What does the term "SPIN MULTIPLICITY" mean?
Answer» What does the term "SPIN MULTIPLICITY" mean?

Discussion

9.	an intimate mixture of ferric oxide and aluminium is used as solid rocket fuels.calculate fuel value per gram and fuel value per cc of the mixture.heats of formation and densities are as follows; dHf al2o3= 399 kcal/mole dhf fe2o3=199kcal/mole density of fe2o3=5.2g/cc density of al=2.7gm/cc soln;- 2al +3/2 o2 -->al2o3 eq 1 2fe + 3/2 o2---- fe2o3 eg 2 2al +fe2o3= al2o3 + 2fe 1eq 1 - 1eq 2 dh=-399-(-199) = -200 kcal fuel value/gram 2 moles of al + 1 mol fe2o3 227 + 1 160 214gm ; fuel value /gram = 200/214= 0.93kcal/gm fuel gram/ cc 2 mole of al= 54/2.7= 20cc 1 mole of fe2o3 = 214/5.2=30.7cc // here ,1 mole of fe2o3 = 160 ...... and 214gm is the sumation of both al and fe2o3 ..... while if we multiply 30.7*5.2 =159.64 which is near about 160
Answer» an intimate mixture of ferric oxide and aluminium is used as solid rocket fuels.calculate fuel value per gram and fuel value per cc of the mixture.heats of formation and densities are as follows; dHf al2o3= 399 kcal/mole dhf fe2o3=199kcal/mole density of fe2o3=5.2g/cc density of al=2.7gm/cc soln;- 2al +3/2 o2 -->al2o3 eq 1 2fe + 3/2 o2---- fe2o3 eg 2 2al +fe2o3= al2o3 + 2fe 1eq 1 - 1eq 2 dh=-399-(-199) = -200 kcal fuel value/gram 2 moles of al + 1 mol fe2o3 227 + 1 160 214gm ; fuel value /gram = 200/214= 0.93kcal/gm fuel gram/ cc 2 mole of al= 54/2.7= 20cc 1 mole of fe2o3 = 214/5.2=30.7cc // here ,1 mole of fe2o3 = 160 ...... and 214gm is the sumation of both al and fe2o3 ..... while if we multiply 30.7*5.2 =159.64 which is near about 160

Discussion

10.	explain how gold is extracted Give answer properly and in simple language
Answer» explain how gold is extracted Give answer properly and in simple language

Discussion

11.	Considering the elements B, Al, Mg and K the correct order of their metallic character is
Answer» Considering the elements B, Al, Mg and K the correct order of their metallic character is

Discussion

12.	Maximum sum of the number of neutrons and protons in an isotope of hydrogen
Answer» Maximum sum of the number of neutrons and protons in an isotope of hydrogen

Discussion

13.	The electronic configuration of four elements are given below. Which elements does not belong to same family as others
Answer» The electronic configuration of four elements are given below. Which elements does not belong to same family as others

13.

The electronic configuration of four elements are given below. Which elements does not belong to same family as others

Answer»

The electronic configuration of four elements are given below.

Which elements does not belong to same family as others

Discussion

14.	Silver oxide Ag2O decomposes at temperature 300°C yielding metallic silver and oxygen gas. A 1.60 g sample of impure silver oxide yields 0.104 g of oxygen gas. What is the percent by mass of silver oxide in the sample ?
Answer» Silver oxide Ag2O decomposes at temperature 300°C yielding metallic silver and oxygen gas. A 1.60 g sample of impure silver oxide yields 0.104 g of oxygen gas. What is the percent by mass of silver oxide in the sample ?

Discussion

15.	An electric discharge is passes through a mixture containing 50 c.c. of H2 and 50 c.c. of O2. The volume of the gases formed (i) at room temperature and (ii) at 110∘C will be:
Answer» An electric discharge is passes through a mixture containing 50 c.c. of $H_{2}$ and 50 c.c. of $O_{2}$ . The volume of the gases formed (i) at room temperature and (ii) at $110^{\circ} C$ will be:

Discussion

16.	Which of thefollowing is the correct order of boiling points
Answer» Which of thefollowing is the correct order of boiling points

Discussion

17.	When 0.44 g of a colourless oxide of nitrogen occupies 224 mL at 1520 mm of Hg and 546 K , then the oxide is
Answer» When $0.44 g$ of a colourless oxide of nitrogen occupies $224 m L$ at $1520 m m$ of $H g$ and 546 K , then the oxide is

Discussion

18.	When orthoboric acid is heated to red heat the residue is
Answer» When orthoboric acid is heated to red heat the residue is

Discussion

19.	Phenols and alcohols both have same -OH group but still phenols are sparingly soluble in water. This is because:
Answer» Phenols and alcohols both have same -OH group but still phenols are sparingly soluble in water. This is because:

Discussion

20.	CH3COCH2ClOH−,Cl2−−−−−→ Product P is
Answer» $C H_{3} C O C H_{2} C l O H^{-}, C l_{2} - ---- \to$ Product P is

Discussion

21.	What is a thermodynamic process?
Answer» What is a thermodynamic process?

Discussion

22.	Find out the amount of oxygen required to burn 39g benzene completely.?
Answer» Find out the amount of oxygen required to burn 39g benzene completely.?

Discussion

23.	Which of the following has the smallest atomic radii?
Answer» Which of the following has the smallest atomic radii?

Discussion

24.	Pls explain me the 2D structures of NaCl, CsCl, ZnS as per exam view.
Answer» Pls explain me the 2D structures of NaCl, CsCl, ZnS as per exam view.

Discussion

25.	When CaCO3 is treated with HCl, a colourless odourless gas is evolved. The gas is:
Answer» When CaCO₃ is treated with HCl, a colourless odourless gas is evolved. The gas is:

Discussion

26.	The no. Of atoms in 100 gram of FCC crystal with density =10g/cm3 and cell edge 200 pm is equal to
Answer» The no. Of atoms in 100 gram of FCC crystal with density =10g/cm3 and cell edge 200 pm is equal to

Discussion

27.	Calculate the work done by the system in an irreversible (single step) adiabatic expansion of 2 mole of a polyatomic gas (γ − 43) from 300K and pressure 10 atm to 1 atm:
Answer» Calculate the work done by the system in an irreversible (single step) adiabatic expansion of 2 mole of a polyatomic gas $(γ - \frac{4}{3})$ from 300K and pressure 10 atm to 1 atm:

Discussion

28.	If the ratio of specific heat of a gas at constant pressure to that at constant volume is γ, the change in internal energy of a mass of gas, when the volume changes from V to 3V under constant pressure P, is
Answer» If the ratio of specific heat of a gas at constant pressure to that at constant volume is $γ,$ the change in internal energy of a mass of gas, when the volume changes from $V$ to $3 V$ under constant pressure $P$ , is

Discussion

29.	The area under the Maxwell distribution curve represents:
Answer» The area under the Maxwell distribution curve represents:

Discussion

30.	According to Bohr's theory, the angular momentum of an electron in 5th orbit is
Answer» According to Bohr's theory, the angular momentum of an electron in 5th orbit is

Discussion

31.	Grignard reagent reacts with carbon dioxide to form:
Answer» Grignard reagent reacts with carbon dioxide to form:

Discussion

32.	What is the mass of precipitate formed when 50 mL of 16.9% (w/v) solution of AgNO3 is mixed with 50 mL of 5.8% (w/v) NaCl solution?
Answer» What is the mass of precipitate formed when 50 mL of 16.9% (w/v) solution of $A g N O_{3}$ is mixed with 50 mL of 5.8% (w/v) NaCl solution?

Discussion

33.	Why is ammonia called a compound?
Answer» Why is ammonia called a compound?

Discussion

34.	The weight percentage of carbon in carbon dioxide and carbon disulphide is 27.27% and 15.79% respectively. What is the ratio of S and O that can combine with same weight of carbon?
Answer» The weight percentage of carbon in carbon dioxide and carbon disulphide is 27.27% and 15.79% respectively. What is the ratio of $S$ and $O$ that can combine with same weight of carbon?

Discussion

35.	Intermediates formed during the reaction RCONH2 with Br2 and KOH are
Answer» Intermediates formed during the reaction RCONH₂ with Br₂ and KOH are

Discussion

36.	If wavelengths of maximum intensity of radiations emitted by the sun and the moon are 0.5×10−6mand 10−4 mrespectively, the ratio of their temperatures is
Answer» If wavelengths of maximum intensity of radiations emitted by the sun and the moon are $0.5 \times 10^{- 6} m a n d 10^{- 4}$ mrespectively, the ratio of their temperatures is

Discussion

37.	How many grams of caustic potash required to completely neutralise 12.6 gm HNO3
Answer» How many grams of caustic potash required to completely neutralise 12.6 gm $H N O_{3}$

Discussion

38.	Which of the following is an example of an acid salt :
Answer» Which of the following is an example of an acid salt :

Discussion

39.	The apparatus consists of three temperature jacketed 1.000 L bulbs connected by stopcocks. Bulb A contains a mixture of H2O(g), CO2(g), and N2(g) at 25∘C and a total pressure of 564 mm Hg. Bulb B is empty and is held at a temperature of −70∘C. Bulb C is also empty and is held at a temperature of −190∘C. The stopcocks are closed, and the volume of the lines connecting the bulbs is zero. CO2 sublimes at −78∘C, and N2 boils at −196∘C. Both stopcocks are opened, and the system is again allowed to come to equilibrium. The pressure throughout the system is 33.5 mm Hg. What does bulb B contain?
Answer» The apparatus consists of three temperature jacketed 1.000 L bulbs connected by stopcocks. Bulb A contains a mixture of $H_{2} O (g)$ , $C O_{2} (g)$ , and $N_{2} (g)$ at $25^{\circ} C$ and a total pressure of 564 mm Hg. Bulb B is empty and is held at a temperature of $- 70^{\circ} C$ . Bulb C is also empty and is held at a temperature of $- 190^{\circ} C$ . The stopcocks are closed, and the volume of the lines connecting the bulbs is zero. $C O_{2}$ sublimes at $- 78^{\circ} C$ , and $N_{2}$ boils at $- 196^{\circ} C$ . Both stopcocks are opened, and the system is again allowed to come to equilibrium. The pressure throughout the system is 33.5 mm Hg. What does bulb B contain?

Discussion

40.	3000 J of heat is given to a gas at a constant pressure of P =(2×105 N/m2). If its volume increases by 10 litres during the process, find the change in the internal energy of the gas.
Answer» $3000 J$ of heat is given to a gas at a constant pressure of $P = (2 \times 10^{5} N / m^{2})$ . If its volume increases by 10 litres during the process, find the change in the internal energy of the gas.

Discussion

41.	Ag2S+NaCN+Zn→Ag This method of extraction of Ag by complex formation and then displacement is called
Answer» $A g_{2} S + N a C N + Z n \to A g$ This method of extraction of Ag by complex formation and then displacement is called

Discussion

42.	The equivalent conductance of M32 solution of a weak monobasic acid is 8 mho cm2 and at infinite dilution is 400 mho cm2. The dissociation constant of this acid is
Answer» The equivalent conductance of $\frac{M}{32}$ solution of a weak monobasic acid is $8 m h o c m^{2}$ and at infinite dilution is $400 m h o c m^{2}$ . The dissociation constant of this acid is

Discussion

43.	E represents an element belonging to carbon family. E+2X2→EX4(X=F,Cl,Br,I)
Answer» E represents an element belonging to carbon family. $E + 2 X_{2} \to E X_{4} (X = F, C l, B r, I)$

Discussion

44.	The total number of radial nodes for a given orbital is _____
Answer» The total number of radial nodes for a given orbital is _____

Discussion

45.	Geometrical Isomerism is exhibited by:
Answer» Geometrical Isomerism is exhibited by:

Discussion

46.	Which of the following complex shows 6 co-ordination no.?
Answer» Which of the following complex shows 6 co-ordination no.?

Discussion

47.	What is isomerism and its types?
Answer» What is isomerism and its types?

Discussion

48.	Which of the following is not a characteristic of a pi bond?
Answer» Which of the following is not a characteristic of a pi bond?

Discussion

49.	The order of basicity among the following compounds is:
Answer» The order of basicity among the following compounds is:

49.

The order of basicity among the following compounds is:

Answer»

The order of basicity among the following compounds is:

Discussion

50.	QUESTION 2.38 Benzene and naphthalene form ideal solution over the entire range of composition. The vapour pressure of pure benzene and naphthalene at 300 K are 50.71 mm Hg and 32.06 mm Hg respectively. Calculate the mole fraction of benzene in vapour phase if 80 g of benzene is mixed with 100 g of naphthalene.
Answer» QUESTION 2.38 Benzene and naphthalene form ideal solution over the entire range of composition. The vapour pressure of pure benzene and naphthalene at 300 K are 50.71 mm Hg and 32.06 mm Hg respectively. Calculate the mole fraction of benzene in vapour phase if 80 g of benzene is mixed with 100 g of naphthalene.

50.

QUESTION 2.38 Benzene and naphthalene form ideal solution over the entire range of composition. The vapour pressure of pure benzene and naphthalene at 300 K are 50.71 mm Hg and 32.06 mm Hg respectively. Calculate the mole fraction of benzene in vapour phase if 80 g of benzene is mixed with 100 g of naphthalene.

Answer»

QUESTION 2.38

Benzene and naphthalene form ideal solution over the entire range of composition. The vapour pressure of pure benzene and naphthalene at 300 K are 50.71 mm Hg and 32.06 mm Hg respectively. Calculate the mole fraction of benzene in vapour phase if 80 g of benzene is mixed with 100 g of naphthalene.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Sodium hydroxide on reaction with amphoteric oxides like. SnO + 2NaOH → ____+ H2O to form.

The number of geometrical isomer of [Co(NH3)3(NO3)3] are

Identify the major product Y:

Is dielectric depends on density of the substance of the medium?

Calculate the molecular formula of the compound which contains 12% Mg and 88% Br by weight, if the molecular weight of compound is 184 g.

The mass of a box measured by a grocer's balance is 2.300 kg .Two gold pieces of masses 20.15 g and 20.17 g are added to the box. What is the total mass of box to correct significant figures ?

The radius of Na+ cation is less than that of Na atom. Give reason.

What does the term "SPIN MULTIPLICITY" mean?

explain how gold is extracted Give answer properly and in simple language

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

Maximum sum of the number of neutrons and protons in an isotope of hydrogen

The electronic configuration of four elements are given below. Which elements does not belong to same family as others

Silver oxide Ag2O decomposes at temperature 300°C yielding metallic silver and oxygen gas. A 1.60 g sample of impure silver oxide yields 0.104 g of oxygen gas. What is the percent by mass of silver oxide in the sample ?

An electric discharge is passes through a mixture containing 50 c.c. of H2 and 50 c.c. of O2. The volume of the gases formed (i) at room temperature and (ii) at 110∘C will be:

Which of thefollowing is the correct order of boiling points

When 0.44 g of a colourless oxide of nitrogen occupies 224 mL at 1520 mm of Hg and 546 K , then the oxide is

When orthoboric acid is heated to red heat the residue is

Phenols and alcohols both have same -OH group but still phenols are sparingly soluble in water. This is because:

CH3COCH2ClOH−,Cl2−−−−−→ Product P is

What is a thermodynamic process?

Find out the amount of oxygen required to burn 39g benzene completely.?

Which of the following has the smallest atomic radii?

Pls explain me the 2D structures of NaCl, CsCl, ZnS as per exam view.

When CaCO3 is treated with HCl, a colourless odourless gas is evolved. The gas is:

The no. Of atoms in 100 gram of FCC crystal with density =10g/cm3 and cell edge 200 pm is equal to

Calculate the work done by the system in an irreversible (single step) adiabatic expansion of 2 mole of a polyatomic gas (γ − 43) from 300K and pressure 10 atm to 1 atm:

If the ratio of specific heat of a gas at constant pressure to that at constant volume is γ, the change in internal energy of a mass of gas, when the volume changes from V to 3V under constant pressure P, is

The area under the Maxwell distribution curve represents:

According to Bohr's theory, the angular momentum of an electron in 5th orbit is

Grignard reagent reacts with carbon dioxide to form:

What is the mass of precipitate formed when 50 mL of 16.9% (w/v) solution of AgNO3 is mixed with 50 mL of 5.8% (w/v) NaCl solution?

Why is ammonia called a compound?

The weight percentage of carbon in carbon dioxide and carbon disulphide is 27.27% and 15.79% respectively. What is the ratio of S and O that can combine with same weight of carbon?

Intermediates formed during the reaction RCONH2 with Br2 and KOH are

If wavelengths of maximum intensity of radiations emitted by the sun and the moon are 0.5×10−6mand 10−4 mrespectively, the ratio of their temperatures is

How many grams of caustic potash required to completely neutralise 12.6 gm HNO3

Which of the following is an example of an acid salt :

3000 J of heat is given to a gas at a constant pressure of P =(2×105 N/m2). If its volume increases by 10 litres during the process, find the change in the internal energy of the gas.

Ag2S+NaCN+Zn→Ag This method of extraction of Ag by complex formation and then displacement is called

The equivalent conductance of M32 solution of a weak monobasic acid is 8 mho cm2 and at infinite dilution is 400 mho cm2. The dissociation constant of this acid is

E represents an element belonging to carbon family. E+2X2→EX4(X=F,Cl,Br,I)

The total number of radial nodes for a given orbital is _____

Geometrical Isomerism is exhibited by:

Which of the following complex shows 6 co-ordination no.?

What is isomerism and its types?

Which of the following is not a characteristic of a pi bond?

The order of basicity among the following compounds is: