15280 + Interview Questions in Chemistry Page 83 InterviewSolution

4101.	The gas released when baking soda is mixed with vinegar, is
Answer» The gas released when baking soda is mixed with vinegar, is

Discussion

4102.	The sulphate of metal M contains 9.87% of M. This sulphate is isomorphous with ZnSO4.7H2O. The atomic weight of M is:(a)40.3u (b)36.3u (c)24.3u (d)11.3u
Answer» The sulphate of metal M contains 9.87% of M. This sulphate is isomorphous with ZnSO4.7H2O. The atomic weight of M is: (a)40.3u (b)36.3u (c)24.3u (d)11.3u

Discussion

4103.	In MnO2+Hcl-MnCl2+H2O+Cl2.why cl is used twice on product side..Is there any specific reason
Answer» In MnO2+Hcl-MnCl2+H2O+Cl2.why cl is used twice on product side..Is there any specific reason

Discussion

4104.	The colour of insoluble product formed when sodium sulphate solution and barium chloride solution are mixed together is :(1) blue(2) yellow(3) white(4) red-brown
Answer» The colour of insoluble product formed when sodium sulphate solution and barium chloride solution are mixed together is : (1) blue (2) yellow (3) white (4) red-brown

Discussion

4105.	Which of the following elements have the different value of electronegavity:- (1)H (2)S (3)Te (4)P
Answer» Which of the following elements have the different value of electronegavity:- (1)H (2)S (3)Te (4)P

Discussion

4106.	What is corrosion? What are the necessary conditions for corrosion? State the conditions in which corrosion is faster. [5 MARKS]
Answer» What is corrosion? What are the necessary conditions for corrosion? State the conditions in which corrosion is faster. [5 MARKS]

Discussion

4107.	Number of C–H bonds in ethane are ___.
Answer» Number of C–H bonds in ethane are ___.

Discussion

4108.	Force on short dipole kept at the equator of the dipole
Answer» Force on short dipole kept at the equator of the dipole

Discussion

4109.	Write the electronic configuration of fluoride ion.
Answer» Write the electronic configuration of fluoride ion.

Discussion

4110.	acidic strength order with explanation 1.c(ch3)3c-cooh 2.(ch3)3si-cooh
Answer» acidic strength order with explanation 1.c(ch3)3c-cooh 2.(ch3)3si-cooh

Discussion

4111.	What do you mean by metals? Write its physical properties.
Answer» What do you mean by metals? Write its physical properties.

Discussion

4112.	Equal masses of H2 , O2 and methane have been taken in a container of volume V at temperature 27^°C in identical conditions. The ratio of the volumes of gases H2 : O2 : methane would be [AIPMT-2014] (1) 8 : 16 : 1 (2) 16 : 8 : 1 (3) 16 : 1 : 2 (4) 8 : 1 : 2
Answer» Equal masses of H2 , O2 and methane have been taken in a container of volume V at temperature 27^°C in identical conditions. The ratio of the volumes of gases H2 : O2 : methane would be [AIPMT-2014] (1) 8 : 16 : 1 (2) 16 : 8 : 1 (3) 16 : 1 : 2 (4) 8 : 1 : 2

Discussion

4113.	Total number of electron pairs present around the central atom in BeCl2 molecule is:2
Answer» Total number of electron pairs present around the central atom in ${BeCl}_{2}$ molecule is: 2

Discussion

4114.

Match the following:1.Percolationi.Precipitated water moves deep into the soil.2.Nitrogen Fixationii.Conversion of atmospheric nitrogen into reactive compounds.3.Denitrificationiii.Precipitated water flows through soil and porous or fractured rock.4.Infiltrationiv.Reduction of nitrate ions of soil into gaseous nitrogen.

Answer»

Match the following:

1.Percolation	i.Precipitated water moves deep into the soil.
2.Nitrogen Fixation	ii.Conversion of atmospheric nitrogen into reactive compounds.
3.Denitrification	iii.Precipitated water flows through soil and porous or fractured rock.
4.Infiltration	iv.Reduction of nitrate ions of soil into gaseous nitrogen.

Discussion

4115.	(i) What type of reaction takes place between ethane and chlorine to form monochloroethane?(ii) The reaction between ethene and chlorine forms only one product. Name the type of the reaction.(iii) (a) Draw the structural formula of ethene. (b) What is the feature of the ethene structure, which allows ethene to react with chlorine in the way it does?
Answer» (i) What type of reaction takes place between ethane and chlorine to form monochloroethane? (ii) The reaction between ethene and chlorine forms only one product. Name the type of the reaction. (iii) (a) Draw the structural formula of ethene. (b) What is the feature of the ethene structure, which allows ethene to react with chlorine in the way it does?

Discussion

4116.	In the reactivity series,do metals below hydrogen also react with acids to form salts and evolve hydrogen
Answer» In the reactivity series,do metals below hydrogen also react with acids to form salts and evolve hydrogen

Discussion

4117.	Which of the following electronic configuration of oxygen (O) atom is correct?
Answer» Which of the following electronic configuration of oxygen $(O)$ atom is correct?

Discussion

4118.	Explain physical and chemical properties of copper.
Answer» Explain physical and chemical properties of copper.

Discussion

4119.	Why is food cooked takes less time in a pressure cooker?
Answer» Why is food cooked takes less time in a pressure cooker?

Discussion

4120.	What mass of Fe will be obtained in pure state from 100 kg of iron ore containing 90% Fe2O3
Answer» What mass of Fe will be obtained in pure state from 100 kg of iron ore containing 90% Fe2O3

Discussion

4121.	Question 2.2Write the balanced equation for the following chemical reaction:Barium chloride + Aluminium sulphate → Barium sulphate + Aluminium chloride
Answer» Question 2.2 Write the balanced equation for the following chemical reaction: Barium chloride + Aluminium sulphate $\to$ Barium sulphate + Aluminium chloride

Discussion

4122.	what is mutarotation and how to find which compound show mutarotation is their is any critieri
Answer» what is mutarotation and how to find which compound show mutarotation is their is any critieri

Discussion

4123.	50 g limestone react with 50% H2SO4 solution completely. What is the weight of H2SO4 required for the purpose ?
Answer» 50 g limestone react with 50% H2SO4 solution completely. What is the weight of H2SO4 required for the purpose ?

Discussion

4124.	Distinguish between the following. (a) Physical change and chemical change (b) Periodic change and non-periodic change (c) Natural change and man-made change
Answer» Distinguish between the following. (a) Physical change and chemical change (b) Periodic change and non-periodic change (c) Natural change and man-made change

Discussion

4125.	HCl is a strong acid because it ________ in water.
Answer» HCl is a strong acid because it ________ in water.

Discussion

4126.	14 The activation energy for the forward reaction as follows is 40 kJ.The activation energy for the reverse reaction is (1) 70 kJ (2) 10 kJ (3) -70 kJ (4) -10 kJ
Answer» 14 The activation energy for the forward reaction as follows is 40 kJ.The activation energy for the reverse reaction is (1) 70 kJ (2) 10 kJ (3) -70 kJ (4) -10 kJ

Discussion

4127.	Q.23 For a reaction, activation energy (Ea) = 0 and rate cons†an t, k = 1.5 × 104 s–1 at 300 K. What is the value of rate cons†an t at 320 K/
Answer» Q.23 For a reaction, activation energy (Ea) = 0 and rate cons†an t, k = 1.5 × 104 s–1 at 300 K. What is the value of rate cons†an t at 320 K/

Discussion

4128.	If a+2b—2c if a is 5 mol ,2b is 10 mol then in this case which is limiting reagent
Answer» If a+2b—2c if a is 5 mol ,2b is 10 mol then in this case which is limiting reagent

Discussion

4129.	Consider the following statements about Gas Hydrates: Which of the above statements are correct?
Answer» Consider the following statements about Gas Hydrates: Which of the above statements are correct?

4129.

Consider the following statements about Gas Hydrates: Which of the above statements are correct?

Answer»

Consider the following statements about Gas Hydrates:

Which of the above statements are correct?

Discussion

4130.	46.The maximum valency of nitrogen
Answer» 46.The maximum valency of nitrogen

Discussion

4131.	How is the concentration of H3O+ ions affected when a solution of an acid is diluted?
Answer» How is the concentration of $H_{3} O^{+}$ ions affected when a solution of an acid is diluted?

Discussion

4132.	How many structural isomers containing a ring with molecular formula C6H12 are possible?
Answer» How many structural isomers containing a ring with molecular formula $C_{6} H_{12}$ are possible?

Discussion

4133.	What is margarine? How is it obtained ?
Answer» What is margarine? How is it obtained ?

Discussion

4134.	Which of the following set of solids contains only ionic solids?NaCl, MgO and ZnS CaF2, ZnS, SiO2 MgO, SiO2, KCl SiO2, SiC, AlN
Answer» Which of the following set of solids contains only ionic solids? NaCl, MgO and ZnS CaF2, ZnS, SiO2 MgO, SiO2, KCl SiO2, SiC, AlN

Discussion

4135.	The number of geometrical isomers possible for 1,2,3,4 tetramethyl cyclobutane is -
Answer» The number of geometrical isomers possible for 1,2,3,4 tetramethyl cyclobutane is -

Discussion

4136.	Which of the following is not found in alkenes?
Answer» Which of the following is not found in alkenes?

Discussion

4137.	Which is the least soluble alkali metal chloride and why?
Answer» Which is the least soluble alkali metal chloride and why?

Discussion

4138.	A coil of inductance 1 H and resistance 100 Ω is connected to a battery of emf 12 V. Find the energy stored in the coil at an instant t=10 ms after the circuit is switched on.[Use e−1=0.367]
Answer» A coil of inductance $1 H$ and resistance $100 Ω$ is connected to a battery of emf $12 V .$ Find the energy stored in the coil at an instant $t = 10 ms$ after the circuit is switched on. [Use $e^{- 1} = 0.367$ ]

Discussion

4139.	‘A’ sample of \lbrack Cu(NH3 ) 4 \rbrack SO4 contains 2.4 × 1024 ammonia molecules. The moles of \lbrack Cu(NH3 ) 4 \rbrack SO4 in given sample wilbe
Answer» ‘A’ sample of \lbrack Cu(NH3 ) 4 \rbrack SO4 contains 2.4 × 1024 ammonia molecules. The moles of \lbrack Cu(NH3 ) 4 \rbrack SO4 in given sample wilbe

Discussion

4140.	Explain salt hydrolysis. Name two salts which are (a) acidic (b) basic (c) neutral, when dissolved in water.
Answer» Explain salt hydrolysis. Name two salts which are (a) acidic (b) basic (c) neutral, when dissolved in water.

Discussion

4141.	14.Addition of one equivalent of Br_2 to 1,3 -pentadiene produce which product
Answer» 14.Addition of one equivalent of Br_2 to 1,3 -pentadiene produce which product

Discussion

4142.	In modern periodic table, the atom of the element present at the end of each period has a/an _____ valence shell.
Answer» In modern periodic table, the atom of the element present at the end of each period has a/an _____ valence shell.

Discussion

4143.	15.Find loan pair of? No2 I3- Diamond Silicon carbide
Answer» 15.Find loan pair of? No2 I3- Diamond Silicon carbide

Discussion

4144.	14.Heat of neutralization of oxalic acid is minus 26 kilo calorie per mole heat of dissociation of oxalic acid is
Answer» 14.Heat of neutralization of oxalic acid is minus 26 kilo calorie per mole heat of dissociation of oxalic acid is

Discussion

4145.	a substance X is produced by using the product of chlor-alkali process as a raw material it is treated with HCL and further reacted with carbon dioxide gas and ammonia gas which is added for faster cooking. Name the substance X. Z is further mixed with Y and the mixture is added while baking bread and cakes. Name the mixture obtained on mixing Z and Y. Write the reaction involved when Z is heated during cooking. Name all the substances X,Y,Z. please solve this question as it was asked in my test hence multiple question s are asked
Answer» a substance X is produced by using the product of chlor-alkali process as a raw material it is treated with HCL and further reacted with carbon dioxide gas and ammonia gas which is added for faster cooking. Name the substance X. Z is further mixed with Y and the mixture is added while baking bread and cakes. Name the mixture obtained on mixing Z and Y. Write the reaction involved when Z is heated during cooking. Name all the substances X,Y,Z. please solve this question as it was asked in my test hence multiple question s are asked

Discussion

4146.	What is quantised energy state
Answer» What is quantised energy state

Discussion

4147.	At NTP what will be the volume of molecules of 6.022*10 to the power 23 Hg?
Answer» At NTP what will be the volume of molecules of 6.022*10 to the power 23 Hg?

Discussion

4148.	Which of the following has the maximum atomic radius?
Answer» Which of the following has the maximum atomic radius?

Discussion

4149.	A parallel beam of light of 450 nm falls on a narrow slit and the resulting diffraction pattern is observed on a screen 1.5 m away. It is observed that the first minimum is at a distance of 3 mm from the centre of the screen. Calculate the width of the slit.
Answer» A parallel beam of light of 450 nm falls on a narrow slit and the resulting diffraction pattern is observed on a screen 1.5 m away. It is observed that the first minimum is at a distance of 3 mm from the centre of the screen. Calculate the width of the slit.

Discussion

4150.	Classify the following as exhaustible and inexhaustible natural resources- air, sunlight, water, forests, wildlife, coal.
Answer» Classify the following as exhaustible and inexhaustible natural resources- air, sunlight, water, forests, wildlife, coal.

Discussion

Explore topic-wise InterviewSolutions in .

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

The sulphate of metal M contains 9.87% of M. This sulphate is isomorphous with ZnSO4.7H2O. The atomic weight of M is:(a)40.3u (b)36.3u (c)24.3u (d)11.3u

In MnO2+Hcl-MnCl2+H2O+Cl2.why cl is used twice on product side..Is there any specific reason

The colour of insoluble product formed when sodium sulphate solution and barium chloride solution are mixed together is :(1) blue(2) yellow(3) white(4) red-brown

Which of the following elements have the different value of electronegavity:- (1)H (2)S (3)Te (4)P

What is corrosion? What are the necessary conditions for corrosion? State the conditions in which corrosion is faster. [5 MARKS]

Number of C–H bonds in ethane are ___.

Force on short dipole kept at the equator of the dipole

Write the electronic configuration of fluoride ion.

acidic strength order with explanation 1.c(ch3)3c-cooh 2.(ch3)3si-cooh

What do you mean by metals? Write its physical properties.

Equal masses of H2 , O2 and methane have been taken in a container of volume V at temperature 27^°C in identical conditions. The ratio of the volumes of gases H2 : O2 : methane would be [AIPMT-2014] (1) 8 : 16 : 1 (2) 16 : 8 : 1 (3) 16 : 1 : 2 (4) 8 : 1 : 2

Total number of electron pairs present around the central atom in BeCl2 molecule is:2

In the reactivity series,do metals below hydrogen also react with acids to form salts and evolve hydrogen

Which of the following electronic configuration of oxygen (O) atom is correct?

Explain physical and chemical properties of copper.

Why is food cooked takes less time in a pressure cooker?

What mass of Fe will be obtained in pure state from 100 kg of iron ore containing 90% Fe2O3

Question 2.2Write the balanced equation for the following chemical reaction:Barium chloride + Aluminium sulphate → Barium sulphate + Aluminium chloride

what is mutarotation and how to find which compound show mutarotation is their is any critieri

50 g limestone react with 50% H2SO4 solution completely. What is the weight of H2SO4 required for the purpose ?

Distinguish between the following. (a) Physical change and chemical change (b) Periodic change and non-periodic change (c) Natural change and man-made change

HCl is a strong acid because it ________ in water.

14 The activation energy for the forward reaction as follows is 40 kJ.The activation energy for the reverse reaction is (1) 70 kJ (2) 10 kJ (3) -70 kJ (4) -10 kJ

Q.23 For a reaction, activation energy (Ea) = 0 and rate cons†an t, k = 1.5 × 104 s–1 at 300 K. What is the value of rate cons†an t at 320 K/

If a+2b—2c if a is 5 mol ,2b is 10 mol then in this case which is limiting reagent

Consider the following statements about Gas Hydrates: Which of the above statements are correct?

46.The maximum valency of nitrogen

How is the concentration of H3O+ ions affected when a solution of an acid is diluted?

How many structural isomers containing a ring with molecular formula C6H12 are possible?

What is margarine? How is it obtained ?

Which of the following set of solids contains only ionic solids?NaCl, MgO and ZnS CaF2, ZnS, SiO2 MgO, SiO2, KCl SiO2, SiC, AlN

The number of geometrical isomers possible for 1,2,3,4 tetramethyl cyclobutane is -

Which of the following is not found in alkenes?

Which is the least soluble alkali metal chloride and why?

A coil of inductance 1 H and resistance 100 Ω is connected to a battery of emf 12 V. Find the energy stored in the coil at an instant t=10 ms after the circuit is switched on.[Use e−1=0.367]

‘A’ sample of \lbrack Cu(NH3 ) 4 \rbrack SO4 contains 2.4 × 1024 ammonia molecules. The moles of \lbrack Cu(NH3 ) 4 \rbrack SO4 in given sample wilbe

Explain salt hydrolysis. Name two salts which are (a) acidic (b) basic (c) neutral, when dissolved in water.

14.Addition of one equivalent of Br_2 to 1,3 -pentadiene produce which product

In modern periodic table, the atom of the element present at the end of each period has a/an _____ valence shell.

15.Find loan pair of? No2 I3- Diamond Silicon carbide

14.Heat of neutralization of oxalic acid is minus 26 kilo calorie per mole heat of dissociation of oxalic acid is

What is quantised energy state

At NTP what will be the volume of molecules of 6.022*10 to the power 23 Hg?

Which of the following has the maximum atomic radius?

A parallel beam of light of 450 nm falls on a narrow slit and the resulting diffraction pattern is observed on a screen 1.5 m away. It is observed that the first minimum is at a distance of 3 mm from the centre of the screen. Calculate the width of the slit.

Classify the following as exhaustible and inexhaustible natural resources- air, sunlight, water, forests, wildlife, coal.