15280 + Interview Questions in Chemistry Page 154 InterviewSolution

7651.	The elements whose atoms have three outermost shells incomplete are calledA. s-block elementsB. p-block elementsC. f-block elementsD. d-block elements
Answer» The elements whose atoms have three outermost shells incomplete are called A. s-block elements B. p-block elements C. f-block elements D. d-block elements

Discussion

7652.	Which of the following dioxide is amphoteric in nature?
Answer» Which of the following dioxide is amphoteric in nature?

Discussion

7653.	50. How addition of an electronegative elements or removal of an electropositive elements is oxidation.
Answer» 50. How addition of an electronegative elements or removal of an electropositive elements is oxidation.

Discussion

7654.	When we make lemonaide each sip has same taste why?
Answer» When we make lemonaide each sip has same taste why?

Discussion

7655.	What happens when (given balanced equation):(a) Sulphur is added to hot and conc. HNO3?(b) Nitric acid is added to KI (aq)?(c) Nitric acid is dissolved in large amount of water?(d) Nitric acid is added to washing soda and the resulting gas is passed through a freshly prepared lime water?(e) Limestone reacts with nitric acid?
Answer» What happens when (given balanced equation): (a) Sulphur is added to hot and conc. HNO₃? (b) Nitric acid is added to KI (aq)? (c) Nitric acid is dissolved in large amount of water? (d) Nitric acid is added to washing soda and the resulting gas is passed through a freshly prepared lime water? (e) Limestone reacts with nitric acid?

Discussion

7656.	1)- Give a chemical test to distinguish between: Ethene gas and Ethane gas. 2)- Identify the gas evolved when: Sodium propionate is heated with soda lime.
Answer» 1)- Give a chemical test to distinguish between: Ethene gas and Ethane gas. 2)- Identify the gas evolved when: Sodium propionate is heated with soda lime.

7656.

1)- Give a chemical test to distinguish between: Ethene gas and Ethane gas. 2)- Identify the gas evolved when: Sodium propionate is heated with soda lime.

Answer»

1)- Give a chemical test to distinguish between: Ethene gas and Ethane gas.

2)- Identify the gas evolved when: Sodium propionate is heated with soda lime.

Discussion

7657.	An element has 10 electrons and 12 neutrons. What is the mass number of this element?
Answer» An element has 10 electrons and 12 neutrons. What is the mass number of this element?

Discussion

7658.	What will be the graphical representation of Boyle's Law on a PV vs d (density) graph ?
Answer» What will be the graphical representation of Boyle's Law on a PV vs d (density) graph ?

Discussion

7659.	WHAT IS CHLORIDE OF LIME? HOW IS IT DIFFERENT FROM CALCIUM CHLORIDE?
Answer» WHAT IS CHLORIDE OF LIME? HOW IS IT DIFFERENT FROM CALCIUM CHLORIDE?

Discussion

7660.	find the density of a 3.6 M sulfuric acid solution that is 29% H2SO4 BY MASS(M=98)
Answer» find the density of a 3.6 M sulfuric acid solution that is 29% H2SO4 BY MASS(M=98)

Discussion

7661.	element having highest first ionisation energy in the following 1] Na 2] Mg 3] Al 4] He
Answer» element having highest first ionisation energy in the following 1] Na 2] Mg 3] Al 4] He

Discussion

7662.	Name the source from which litmus solution is obtained. What is the use of this solution?
Answer» Name the source from which litmus solution is obtained. What is the use of this solution?

Discussion

7663.	What type of rock is coal?
Answer» What type of rock is coal?

Discussion

7664.	Name the gas obtained when hydrogen and nitrogen are combined.
Answer» Name the gas obtained when hydrogen and nitrogen are combined.

Discussion

7665.	Out of the following oxides, the amphoteric oxide is : (a) Fe2O3 (b) Al2O3 (c) P2O3 (d) N2O
Answer» Out of the following oxides, the amphoteric oxide is : (a) $F e_{2} O_{3}$ (b) $A l_{2} O_{3}$ (c) $P_{2} O_{3}$ (d) $N_{2} O$

Discussion

7666.	How many litres of air (air is 21% oxygen) is required for the combustion of 6.75 L of CH4? (Assume air and CH4 are at the same T and P)
Answer» How many litres of air (air is 21% oxygen) is required for the combustion of 6.75 L of CH₄? (Assume air and CH₄ are at the same T and P)

Discussion

7667.	Which of the following do not have a coordinate bond 1) PH4+ 2) NO3- 3) O3 4) CO3 2
Answer» Which of the following do not have a coordinate bond 1) PH4+ 2) NO3- 3) O3 4) CO3 2

Discussion

7668.	Emergency....Please Fast Give 2 examples for each 1)Solid Covalent compounds 2)Gaseous Polar Compounds 3)Liquid Non polar Compounds 4) Gaseous Non Polar Compounds
Answer» Emergency....Please Fast Give 2 examples for each 1)Solid Covalent compounds 2)Gaseous Polar Compounds 3)Liquid Non polar Compounds 4) Gaseous Non Polar Compounds

7668.

Emergency....Please Fast Give 2 examples for each 1)Solid Covalent compounds 2)Gaseous Polar Compounds 3)Liquid Non polar Compounds 4) Gaseous Non Polar Compounds

Answer»

Emergency....Please Fast

Give 2 examples for each

1)Solid Covalent compounds

2)Gaseous Polar Compounds

3)Liquid Non polar Compounds

4) Gaseous Non Polar Compounds

Discussion

7669.	Which of the following metal ion forms unstable complex with CN^- :-1) Ag(I) 2) Zn(II) 3) Cu(II) 4) Cr (II)
Answer» Which of the following metal ion forms unstable complex with CN^- :- 1) Ag(I) 2) Zn(II) 3) Cu(II) 4) Cr (II)

Discussion

7670.	15. The volume of air at STP containing 30% oxygen by volume required to completely burn 200 litre of methane gas at STP
Answer» 15. The volume of air at STP containing 30% oxygen by volume required to completely burn 200 litre of methane gas at STP

Discussion

7671.	10. Calculate half cell potential at 298k for the reaction Zn\pm +2 ===Zn if [Zn]=2M, Enot Zn\pm /Zn = -0.76V
Answer» 10. Calculate half cell potential at 298k for the reaction Zn\pm +2 ===Zn if [Zn]=2M, Enot Zn\pm /Zn = -0.76V

Discussion

7672.	How will you carry out the following conversions?(i) Ethene to acetic acid(ii) Ethane to acetic acid
Answer» How will you carry out the following conversions? (i) Ethene to acetic acid (ii) Ethane to acetic acid

Discussion

7673.	The two electrons have the following set of quantum numbers:P=3,2,−2,+12 Q=3,0,0,+12Which of the following statement is true?
Answer» The two electrons have the following set of quantum numbers: $P = 3, 2, - 2, + \frac{1}{2}$ $Q = 3, 0, 0, + \frac{1}{2}$ Which of the following statement is true?

7673.

The two electrons have the following set of quantum numbers:P=3,2,−2,+12 Q=3,0,0,+12Which of the following statement is true?

Answer»

The two electrons have the following set of quantum numbers:

$P = 3, 2, - 2, + \frac{1}{2}$ $Q = 3, 0, 0, + \frac{1}{2}$

Which of the following statement is true?

Discussion

7674.	63. What product is formed when aluminium reacts with nitric acid
Answer» 63. What product is formed when aluminium reacts with nitric acid

Discussion

7675.	Themolecular mass of organic compound is 78 and its %composition is 92.4%c and 7.6%H.Find the molecular formula of the compound
Answer» Themolecular mass of organic compound is 78 and its %composition is 92.4%c and 7.6%H.Find the molecular formula of the compound

Discussion

7676.	A body of mass 5 kg falls from a height of 10 m to 4 m.Calculate the total energy possessed by the body at any instant . Give reasons for your answer.
Answer» A body of mass 5 kg falls from a height of 10 m to 4 m.Calculate the total energy possessed by the body at any instant . Give reasons for your answer.

Discussion

7677.	Explain, the statement 'In each period, the atomic radii gradually decrease with increase in atomic number'. Give one example to justify your answer.
Answer» Explain, the statement 'In each period, the atomic radii gradually decrease with increase in atomic number'. Give one example to justify your answer.

Discussion

7678.	Give three pieces of information conveyed by the formula H2O.
Answer» Give three pieces of information conveyed by the formula H₂O.

Discussion

7679.	Two moles of ammonia gas are introduced into a previously evacuated one litre vessel in which it partially dissociates at high temperature.At equilibrium,one mole of ammonia remain.The value of Kc is?
Answer» Two moles of ammonia gas are introduced into a previously evacuated one litre vessel in which it partially dissociates at high temperature.At equilibrium,one mole of ammonia remain.The value of Kc is?

Discussion

7680.	Q1) BeH2, LiH and MgH2 are ionic or covalent hydride
Answer» Q1) BeH2, LiH and MgH2 are ionic or covalent hydride

Discussion

7681.	Which of the following is/are abiotic components of our environment?
Answer» Which of the following is/are abiotic components of our environment?

Discussion

7682.	The study of interrelationships between organisms and with their environment is called ____.
Answer» The study of interrelationships between organisms and with their environment is called ____.

Discussion

7683.	Why the single bond is more stronger than the double bond.
Answer» Why the single bond is more stronger than the double bond.

Discussion

7684.	An ideal gas at 1 bar is heated from 0o C to 373K. If its initial volume is 5.46L, the final volume would be
Answer» An ideal gas at 1 bar is heated from $0^{o} C$ to 373K. If its initial volume is 5.46L, the final volume would be

Discussion

7685.	What is the general formula for alkynes?
Answer» What is the general formula for alkynes?

Discussion

7686.	If equivalent weight of hydride of a metal is 15 then eqivalent weight of its oxide is
Answer» If equivalent weight of hydride of a metal is 15 then eqivalent weight of its oxide is

Discussion

7687.	ques. the number of moles of KMnO_{4 }that will be needed to react with one mole of sulphite ion in acidic solution is : (a)1 (b) 3/5 (c)4/5 (d)2/
Answer» ques. the number of moles of KMnO_{4 }that will be needed to react with one mole of sulphite ion in acidic solution is : (a)1 (b) 3/5 (c)4/5 (d)2/

Discussion

7688.	How to find out that which atom/molecule belongs to which crystal system with the help of seven crystal systems?
Answer» How to find out that which atom/molecule belongs to which crystal system with the help of seven crystal systems?

Discussion

7689.	write an activity to show the tissue culture at home
Answer» write an activity to show the tissue culture at home

Discussion

7690.	Give the correct IUPAC name and the functional group for each of the compounds whose structural formulae are given below:
Answer» Give the correct IUPAC name and the functional group for each of the compounds whose structural formulae are given below:

Discussion

7691.	when ethane is burnt in excess of oxygen the oxidation no of carbon changeb
Answer» when ethane is burnt in excess of oxygen the oxidation no of carbon changeb

Discussion

7692.	a catalyst lowers the activation energy of a certain reaction from 75 to 29 kj/mol. what will be the effect on rate of the reaction at 27^oC other things being equal?
Answer» a catalyst lowers the activation energy of a certain reaction from 75 to 29 kj/mol. what will be the effect on rate of the reaction at 27^oC other things being equal?

Discussion

7693.	A straight chain hydrocarbon has a molecular formula C8H10 . The hybridisation of the carbon atoms from one end of the chain to the other are respectively sp3, sp2, sp3, sp2, sp and sp .The structural formula of hydrocarbon is A) CH3C≡CCH2CH=CHCH=CH2B)CH3CH2CH=CHCH=CH≡ CHC)CH3CH=CHCH2C≡ CCH=CH2D)CH3CH=CHCH2CHCHC≡CH
Answer» A straight chain hydrocarbon has a molecular formula C8H10 . The hybridisation of the carbon atoms from one end of the chain to the other are respectively sp3, sp2, sp3, sp2, sp and sp .The structural formula of hydrocarbon is A) CH3C≡CCH2CH=CHCH=CH2 B)CH3CH2CH=CHCH=CH≡ CH C)CH3CH=CHCH2C≡ CCH=CH2 D)CH3CH=CHCH2CHCHC≡CH

Discussion

7694.	Element X is a metal with a valency 2. Element Y is a non-metal with a valency 3. (a) Write equations to show how X and Y form ions? (b) If Y is a diatomic gas, write the equation for the direct combination of X and Y to form a compound. (c) If the compound formed between X and Y is melted and an electric current passed through the molten compound, the element X will be obtained at the ___ and Y at the ___ of the electrolytic cell. (Provide the missing words).
Answer» Element X is a metal with a valency 2. Element Y is a non-metal with a valency 3. (a) Write equations to show how X and Y form ions? (b) If Y is a diatomic gas, write the equation for the direct combination of X and Y to form a compound. (c) If the compound formed between X and Y is melted and an electric current passed through the molten compound, the element X will be obtained at the ___ and Y at the ___ of the electrolytic cell. (Provide the missing words).

7694.

Element X is a metal with a valency 2. Element Y is a non-metal with a valency 3. (a) Write equations to show how X and Y form ions? (b) If Y is a diatomic gas, write the equation for the direct combination of X and Y to form a compound. (c) If the compound formed between X and Y is melted and an electric current passed through the molten compound, the element X will be obtained at the _ and Y at the _ of the electrolytic cell. (Provide the missing words).

Answer»

Element X is a metal with a valency 2. Element Y is a non-metal with a valency 3.

(a) Write equations to show how X and Y form ions?

(b) If Y is a diatomic gas, write the equation for the direct combination of X and Y to form a compound.

(c) If the compound formed between X and Y is melted and an electric current passed through the molten compound, the element X will be obtained at the ___ and Y at the ___ of the electrolytic cell.

(Provide the missing words).

Discussion

7695.	Question 20.In an attempt to demonstrate electrical conductivity through an electrolyte, the following apparatus ( see the figure ) was set up.Which among the following statement(s) is/ are correct?(i) Bulb will not glow because electrolyte is not acidic.(ii) Bulb will glow because NaOH is a strong base and furnishes ions for conduction.(iii) Bulb will not glow because circuit is incomplete.(iv) Bulb will not glow because it depends upon the type of electrolytic solution.(a) (i) and (iii)(b) (ii) and (iv)(c) (ii) only(d) (iv) only
Answer» Question 20. In an attempt to demonstrate electrical conductivity through an electrolyte, the following apparatus ( see the figure ) was set up. Which among the following statement(s) is/ are correct? (i) Bulb will not glow because electrolyte is not acidic. (ii) Bulb will glow because NaOH is a strong base and furnishes ions for conduction. (iii) Bulb will not glow because circuit is incomplete. (iv) Bulb will not glow because it depends upon the type of electrolytic solution. (a) (i) and (iii) (b) (ii) and (iv) (c) (ii) only (d) (iv) only

Discussion

7696.	What are strong and weak acids? In the following list of acids separate strong acids from weak acids.Hydrochloric acidCitric acidAcetic acidNitric acidFormic acidSulphuric acid
Answer» What are strong and weak acids? In the following list of acids separate strong acids from weak acids. Hydrochloric acid Citric acid Acetic acid Nitric acid Formic acid Sulphuric acid

Discussion

7697.	What influence does a decrease in reactant concentration have on the system which is in equilibrium?
Answer» What influence does a decrease in reactant concentration have on the system which is in equilibrium?

Discussion

7698.	The electronic configuration of a s-block element is [Ne]3s2. The group number of this element is:2
Answer» The electronic configuration of a s-block element is ${[Ne]3s}^{2}$ . The group number of this element is: 2

Discussion

7699.	Q 10/15 When FeCl3 is added to excess of hot water thenature of hydrated ferric oxide isNegativePositiveNeutralSometimes positive and sometimes negative
Answer» Q 10/15 When FeCl3 is added to excess of hot water the nature of hydrated ferric oxide is Negative Positive Neutral Sometimes positive and sometimes negative

Discussion

7700.	The amount of zinc recquired to produce 1.12 ml of H2 at stp on treatment with dilut HCL will be.
Answer» The amount of zinc recquired to produce 1.12 ml of H2 at stp on treatment with dilut HCL will be.

Discussion

Explore topic-wise InterviewSolutions in .

The elements whose atoms have three outermost shells incomplete are calledA. s-block elementsB. p-block elementsC. f-block elementsD. d-block elements

Which of the following dioxide is amphoteric in nature?

50. How addition of an electronegative elements or removal of an electropositive elements is oxidation.

When we make lemonaide each sip has same taste why?

1)- Give a chemical test to distinguish between: Ethene gas and Ethane gas. 2)- Identify the gas evolved when: Sodium propionate is heated with soda lime.

An element has 10 electrons and 12 neutrons. What is the mass number of this element?

What will be the graphical representation of Boyle's Law on a PV vs d (density) graph ?

WHAT IS CHLORIDE OF LIME? HOW IS IT DIFFERENT FROM CALCIUM CHLORIDE?

find the density of a 3.6 M sulfuric acid solution that is 29% H2SO4 BY MASS(M=98)

element having highest first ionisation energy in the following 1] Na 2] Mg 3] Al 4] He

Name the source from which litmus solution is obtained. What is the use of this solution?

What type of rock is coal?

Name the gas obtained when hydrogen and nitrogen are combined.

Out of the following oxides, the amphoteric oxide is : (a) Fe2O3 (b) Al2O3 (c) P2O3 (d) N2O

How many litres of air (air is 21% oxygen) is required for the combustion of 6.75 L of CH4? (Assume air and CH4 are at the same T and P)

Which of the following do not have a coordinate bond 1) PH4+ 2) NO3- 3) O3 4) CO3 2

Emergency....Please Fast Give 2 examples for each 1)Solid Covalent compounds 2)Gaseous Polar Compounds 3)Liquid Non polar Compounds 4) Gaseous Non Polar Compounds

Which of the following metal ion forms unstable complex with CN^- :-1) Ag(I) 2) Zn(II) 3) Cu(II) 4) Cr (II)

15. The volume of air at STP containing 30% oxygen by volume required to completely burn 200 litre of methane gas at STP

10. Calculate half cell potential at 298k for the reaction Zn\pm +2 ===Zn if [Zn]=2M, Enot Zn\pm /Zn = -0.76V

How will you carry out the following conversions?(i) Ethene to acetic acid(ii) Ethane to acetic acid

The two electrons have the following set of quantum numbers:P=3,2,−2,+12 Q=3,0,0,+12Which of the following statement is true?

63. What product is formed when aluminium reacts with nitric acid

Themolecular mass of organic compound is 78 and its %composition is 92.4%c and 7.6%H.Find the molecular formula of the compound

A body of mass 5 kg falls from a height of 10 m to 4 m.Calculate the total energy possessed by the body at any instant . Give reasons for your answer.

Explain, the statement 'In each period, the atomic radii gradually decrease with increase in atomic number'. Give one example to justify your answer.

Give three pieces of information conveyed by the formula H2O.

Two moles of ammonia gas are introduced into a previously evacuated one litre vessel in which it partially dissociates at high temperature.At equilibrium,one mole of ammonia remain.The value of Kc is?

Q1) BeH2, LiH and MgH2 are ionic or covalent hydride

Which of the following is/are abiotic components of our environment?

The study of interrelationships between organisms and with their environment is called ____.

Why the single bond is more stronger than the double bond.

An ideal gas at 1 bar is heated from 0o C to 373K. If its initial volume is 5.46L, the final volume would be

What is the general formula for alkynes?

If equivalent weight of hydride of a metal is 15 then eqivalent weight of its oxide is

ques. the number of moles of KMnO_{4 }that will be needed to react with one mole of sulphite ion in acidic solution is : (a)1 (b) 3/5 (c)4/5 (d)2/

How to find out that which atom/molecule belongs to which crystal system with the help of seven crystal systems?

write an activity to show the tissue culture at home

Give the correct IUPAC name and the functional group for each of the compounds whose structural formulae are given below:

when ethane is burnt in excess of oxygen the oxidation no of carbon changeb

a catalyst lowers the activation energy of a certain reaction from 75 to 29 kj/mol. what will be the effect on rate of the reaction at 27^oC other things being equal?

What are strong and weak acids? In the following list of acids separate strong acids from weak acids.​Hydrochloric acidCitric acidAcetic acidNitric acidFormic acidSulphuric acid

What influence does a decrease in reactant concentration have on the system which is in equilibrium?

The electronic configuration of a s-block element is [Ne]3s2. The group number of this element is:2

Q 10/15 When FeCl3 is added to excess of hot water thenature of hydrated ferric oxide isNegativePositiveNeutralSometimes positive and sometimes negative

The amount of zinc recquired to produce 1.12 ml of H2 at stp on treatment with dilut HCL will be.

What are strong and weak acids? In the following list of acids separate strong acids from weak acids.Hydrochloric acidCitric acidAcetic acidNitric acidFormic acidSulphuric acid