7248 + Interview Questions in Chemistry Page 18 InterviewSolution

851.	Types of cropping pattern
Answer» Types of cropping pattern

Discussion

852.	What are combination reactions?
Answer» What are combination reactions?

Discussion

853.	When potassium reacts with cold water then hydrogen gas burns with a:-
Answer» When potassium reacts with cold water then hydrogen gas burns with a:-

Discussion

854.	Which among these is not a property of a liquid?
Answer» Which among these is not a property of a liquid?

Discussion

855.	0.185 g of an organic substance when treated with conc. HNO3 gave 0.328 g of silver bromide. What will be the percentage of bromine in the compound?
Answer» 0.185 g of an organic substance when treated with conc. HNO3 gave 0.328 g of silver bromide. What will be the percentage of bromine in the compound?

Discussion

856.	In all the ions present at one of the rectangular plane of symmetry in NACL structure are removed what will be the new form of rock salt
Answer» In all the ions present at one of the rectangular plane of symmetry in NACL structure are removed what will be the new form of rock salt

Discussion

857.	Where does hydrogen occur in a free state?
Answer» Where does hydrogen occur in a free state?

Discussion

858.	How did we get mass-mass relation, mass volume relation, and volume volume relation(mole concept)? Is it based on any law of chemical combination?
Answer» How did we get mass-mass relation, mass volume relation, and volume volume relation(mole concept)? Is it based on any law of chemical combination?

Discussion

859.	Name the different constituents of petroleum and their uses. [5 MARKS]
Answer» Name the different constituents of petroleum and their uses. [5 MARKS]

Discussion

860.	How many molecule of O2 are present in 1L air containing 80% volume of O2 at STP?
Answer» How many molecule of O2 are present in 1L air containing 80% volume of O2 at STP?

Discussion

861.	Which of the following letters were used in the Niels Bohr model of the atom for representing the orbits or shells?
Answer» Which of the following letters were used in the Niels Bohr model of the atom for representing the orbits or shells?

Discussion

862.	What will you do to keep the surroundings clean?
Answer» What will you do to keep the surroundings clean?

Discussion

863.	Remplis:1. Quand on est malade, on va chez le ........................2. Le médecin prescrit des ............................ .3. On peut acheter des médicaments à la .............................4. Il faut remplir les formulaires de la ......................... .5. À cause de trop de pollution, les gens ont des problèmes de ....................
Answer» Remplis: 1. Quand on est malade, on va chez le ........................ 2. Le médecin prescrit des ............................ . 3. On peut acheter des médicaments à la ............................. 4. Il faut remplir les formulaires de la ......................... . 5. À cause de trop de pollution, les gens ont des problèmes de ....................

Discussion

864.	Which type of fuels are used for running automobiles? Give some examples. [3 MARKS]
Answer» Which type of fuels are used for running automobiles? Give some examples. [3 MARKS]

Discussion

865.	In the replacement reaction Cl + MF---> CF + M The reaction will be most favourable if M happensto be (1) Na (2) K (3)Rb(4) Li
Answer» In the replacement reaction Cl + MF---> CF + M The reaction will be most favourable if M happensto be (1) Na (2) K (3)Rb(4) Li

Discussion

866.	A substance that is composed of two or more elements, chemically combined with one another in a fixed proportion is called a ____.
Answer» A substance that is composed of two or more elements, chemically combined with one another in a fixed proportion is called a ____.

Discussion

867.	Why is law of conservation of mass also called as law of undestructiablity ?
Answer» Why is law of conservation of mass also called as law of undestructiablity ?

Discussion

868.	The SI unit of specific heat capacity is
Answer» The SI unit of specific heat capacity is

Discussion

869.	Explain zonerefining and thermodynamical principle of metallurgy
Answer» Explain zonerefining and thermodynamical principle of metallurgy

Discussion

870.	The volume of O2 gas required to react with 5.6L of hydrogen gas to give H2O IS AT S. T. P Conditions
Answer» The volume of O2 gas required to react with 5.6L of hydrogen gas to give H2O IS AT S. T. P Conditions

Discussion

871.	15. Explain law of constant proportion in simple language and law of chemical combination in simple language and Dalton theory
Answer» 15. Explain law of constant proportion in simple language and law of chemical combination in simple language and Dalton theory

Discussion

872.	Which of the following correctly connect items in column - I with column - II Column – I Column – II A. Nylon P. Thermoplastic B. PVC Q. Thermosetting plastic C. Bakelite R. Fibre
Answer» Which of the following correctly connect items in column - I with column - II Column – I Column – II A. Nylon P. Thermoplastic B. PVC Q. Thermosetting plastic C. Bakelite R. Fibre

Discussion

873.	Which of the given statements is true for gaseous fuels?
Answer» Which of the given statements is true for gaseous fuels?

Discussion

874.	easy wat to learn perodic table with mass number or all about particular element?
Answer» easy wat to learn perodic table with mass number or all about particular element?

Discussion

875.	Which of the following statements about a mixture is true?
Answer» Which of the following statements about a mixture is true?

Discussion

876.	Chemical fertilizers may get washed into water bodies through a process called:
Answer» Chemical fertilizers may get washed into water bodies through a process called:

Discussion

877.	a Cu + b HNO3 (dil.) ------> c Cu (No3)2 + d H2O + e No. How to solve this by algebraic method of balancing?
Answer» a Cu + b HNO3 (dil.) ------> c Cu (No3)2 + d H2O + e No. How to solve this by algebraic method of balancing?

Discussion

878.	Which of the following acids is known as aqua fortis?
Answer» Which of the following acids is known as aqua fortis?

Discussion

879.	For a first order reaction, A → P, the temperature (T) dependent rate constant (k) was found to follow the equation: log k=2000T+6.0 the pre - exponential factor A and the activation energy Eα. respectively, are:
Answer» For a first order reaction, A $\to$ P, the temperature (T) dependent rate constant (k) was found to follow the equation: $l o g k = \frac{2000}{T} + 6.0$ the pre - exponential factor A and the activation energy $E_{α}$ . respectively, are:

Discussion

880.	Methane burns in air to form what?
Answer» Methane burns in air to form what?

Discussion

881.	Explain why fossil fuels are exhaustible natural resources.
Answer» Explain why fossil fuels are exhaustible natural resources.

Discussion

882.	WHAT DOES MINUS SIGN IN BULK MODULUS REPRESENT?
Answer» WHAT DOES MINUS SIGN IN BULK MODULUS REPRESENT?

Discussion

883.	Question 8Match the substances given in Column A with their uses given in Column B. A B(i)Gold(a)Thermometers(ii)Iron(b)Electric wire(iii)Aluminium(c)Wrapping food(iv)Carbon(d)Jewellery(v)Copper(e)Machinery(vi)Mercury(f)Fuel
Answer» Question 8 Match the substances given in Column A with their uses given in Column B. $\begin{matrix} A & B (i) & G o l d & (a) & T h e r m o m e t e r s (i i) & I r o n & (b) & E l e c t r i c w i r e (i i i) & A l u m i n i u m & (c) & W r a p p i n g f o o d (i v) & C a r b o n & (d) & J e w e l l e r y (v) & C o p p e r & (e) & M a c h i n e r y (v i) & M e r c u r y & (f) & F u e l \end{matrix}$

Discussion

884.	Which of two - Oxygen or Nitrogen, can be used as refrigerent to preserve foods? Why ?
Answer» Which of two - Oxygen or Nitrogen, can be used as refrigerent to preserve foods? Why ?

Discussion

885.	Fill in the blanks using proper words.(a) Rubber made by vulcanization is a ...... material.(b) Man-made materials are made by .......... natural materials.(c) ............. thread was developed simultaneously in New York and London.(d) Rayon is also known as ............
Answer» Fill in the blanks using proper words. (a) Rubber made by vulcanization is a ...... material. (b) Man-made materials are made by .......... natural materials. (c) ............. thread was developed simultaneously in New York and London. (d) Rayon is also known as ............

Discussion

886.	Give any formula for finding Unit of Rate for nth order
Answer» Give any formula for finding Unit of Rate for nth order

Discussion

887.	How do we know that anything is metal or non metal?
Answer» How do we know that anything is metal or non metal?

Discussion

888.	A 100 ml solution having activity 50 dps is kept in a beaker. It is now constantly diluted by adding water at a constant rate of 10 ml/s and simultaneously 2 ml/s of solution is constantly taken out. The activity of 10 ml solution which is taken out, assuming half life to be effectively very large, is A0[1−(5a)1/b] where A0=50 dps. Find the value of ab.
Answer» A $100 ml$ solution having activity $50 dps$ is kept in a beaker. It is now constantly diluted by adding water at a constant rate of $10 ml/s$ and simultaneously $2 ml/s$ of solution is constantly taken out. The activity of $10 ml$ solution which is taken out, assuming half life to be effectively very large, is $A_{0} [1 - {(\frac{5}{a})}^{1 / b}]$ where $A_{0} = 50 dps$ . Find the value of $a b$ .

Discussion

889.	CaOCl2 is the product of reaction between calcium hydroxide and ___ and is commonly called as ___.
Answer» $C a O C l_{2}$ is the product of reaction between calcium hydroxide and ___ and is commonly called as ___.

Discussion

890.	Which of the following metals on reaction with water releases hydrogen gas?
Answer» Which of the following metals on reaction with water releases hydrogen gas?

Discussion

891.	what is meant by 'presence of multiple bonds in conjugation'?
Answer» what is meant by 'presence of multiple bonds in conjugation'?

Discussion

892.	An ideal gas heat engine operate between 27°c and 127°c if it absorbs 10 kcal per cycle at higher temperature then amount of heat energy thrown to sink per cycle is
Answer» An ideal gas heat engine operate between 27°c and 127°c if it absorbs 10 kcal per cycle at higher temperature then amount of heat energy thrown to sink per cycle is

Discussion

893.	In collogative properties what is the role of solvents ?
Answer» In collogative properties what is the role of solvents ?

Discussion

894.	Give one use of teflon.
Answer» Give one use of teflon.

Discussion

895.	Tick True/False against the following statements.(a) Fossilfuels can be made in the laboratory. (T / F)(b) CNGis more polluting fuel than petrol. (T / F)(c) Cokeis almost pure form of carbon. (T / F)(d) Coaltar is a mixture of various substances. (T / F)(e) Keroseneis not a fossil fuel. (T / F)
Answer» Tick True/False against the following statements. (a) Fossil fuels can be made in the laboratory. (T / F) (b) CNG is more polluting fuel than petrol. (T / F) (c) Coke is almost pure form of carbon. (T / F) (d) Coal tar is a mixture of various substances. (T / F) (e) Kerosene is not a fossil fuel. (T / F)

895.

Tick True/False against the following statements.(a) Fossilfuels can be made in the laboratory. (T / F)(b) CNGis more polluting fuel than petrol. (T / F)(c) Cokeis almost pure form of carbon. (T / F)(d) Coaltar is a mixture of various substances. (T / F)(e) Keroseneis not a fossil fuel. (T / F)

Answer»

Tick True/False against the following statements.

(a) Fossil
fuels can be made in the laboratory. (T / F)

(b) CNG
is more polluting fuel than petrol. (T / F)

(c) Coke
is almost pure form of carbon. (T / F)

(d) Coal
tar is a mixture of various substances. (T / F)

(e) Kerosene
is not a fossil fuel. (T / F)

Discussion

896.	Write the preparation of bleaching powder and mention its uses.
Answer» Write the preparation of bleaching powder and mention its uses.

Discussion

897.	Why is the atomic weight is also called as the relative atomic mass. Explain in a way I can understand.
Answer» Why is the atomic weight is also called as the relative atomic mass. Explain in a way I can understand.

Discussion

898.	The process of settling of rice in rice and water mixture is called ______ and pouring out the water without disturbing the rice is called _____.
Answer» The process of settling of rice in rice and water mixture is called ______ and pouring out the water without disturbing the rice is called _____.

Discussion

899.	Which of the following statement/s describe the solution?STATEMENT 1: A solution is a homogenous mixture of two or more substances.STATEMENT 2: Brass is a solid-solid mixture.STATEMENT 3: Solutions are mixtures of different molecules that are evenly distributed.STATEMENT 4: Lemonade is an example of a solution.
Answer» Which of the following statement/s describe the solution? STATEMENT 1: A solution is a homogenous mixture of two or more substances. STATEMENT 2: Brass is a solid-solid mixture. STATEMENT 3: Solutions are mixtures of different molecules that are evenly distributed. STATEMENT 4: Lemonade is an example of a solution.

899.

Which of the following statement/s describe the solution?STATEMENT 1: A solution is a homogenous mixture of two or more substances.STATEMENT 2: Brass is a solid-solid mixture.STATEMENT 3: Solutions are mixtures of different molecules that are evenly distributed.STATEMENT 4: Lemonade is an example of a solution.

Answer»

Which of the following statement/s describe the solution?

STATEMENT 1: A solution is a homogenous mixture of two or more substances.

STATEMENT 2: Brass is a solid-solid mixture.

STATEMENT 3: Solutions are mixtures of different molecules that are evenly distributed.

STATEMENT 4: Lemonade is an example of a solution.

Discussion

900.	18.Prove that 5 m3 volume of air is needed for the combustion of 1 m3 of a gas having following composition in % volume 50% H2 , 35% CH4,8% CO2,2% C2H4 and 5% non combustible mixture
Answer» 18.Prove that 5 m3 volume of air is needed for the combustion of 1 m3 of a gas having following composition in % volume 50% H2 , 35% CH4,8% CO2,2% C2H4 and 5% non combustible mixture

Discussion

Explore topic-wise InterviewSolutions in .

Types of cropping pattern

What are combination reactions?

When potassium reacts with cold water then hydrogen gas burns with a:-

Which among these is not a property of a liquid?

0.185 g of an organic substance when treated with conc. HNO3 gave 0.328 g of silver bromide. What will be the percentage of bromine in the compound?

In all the ions present at one of the rectangular plane of symmetry in NACL structure are removed what will be the new form of rock salt

Where does hydrogen occur in a free state?

How did we get mass-mass relation, mass volume relation, and volume volume relation(mole concept)? Is it based on any law of chemical combination?

Name the different constituents of petroleum and their uses. [5 MARKS]

How many molecule of O2 are present in 1L air containing 80% volume of O2 at STP?

Which of the following letters were used in the Niels Bohr model of the atom for representing the orbits or shells?

What will you do to keep the surroundings clean?

Which type of fuels are used for running automobiles? Give some examples. [3 MARKS]

In the replacement reaction Cl + MF---> CF + M The reaction will be most favourable if M happensto be (1) Na (2) K (3)Rb(4) Li

A substance that is composed of two or more elements, chemically combined with one another in a fixed proportion is called a ____.

Why is law of conservation of mass also called as law of undestructiablity ?

The SI unit of specific heat capacity is

Explain zonerefining and thermodynamical principle of metallurgy

The volume of O2 gas required to react with 5.6L of hydrogen gas to give H2O IS AT S. T. P Conditions

15. Explain law of constant proportion in simple language and law of chemical combination in simple language and Dalton theory

Which of the following correctly connect items in column - I with column - II Column – I Column – II A. Nylon P. Thermoplastic B. PVC Q. Thermosetting plastic C. Bakelite R. Fibre

Which of the given statements is true for gaseous fuels?

easy wat to learn perodic table with mass number or all about particular element?

Which of the following statements about a mixture is true?

Chemical fertilizers may get washed into water bodies through a process called:

a Cu + b HNO3 (dil.) ------> c Cu (No3)2 + d H2O + e No. How to solve this by algebraic method of balancing?

Which of the following acids is known as aqua fortis?

For a first order reaction, A → P, the temperature (T) dependent rate constant (k) was found to follow the equation: log k=2000T+6.0 the pre - exponential factor A and the activation energy Eα. respectively, are:

Methane burns in air to form what?

Explain why fossil fuels are exhaustible natural resources.

WHAT DOES MINUS SIGN IN BULK MODULUS REPRESENT?

Question 8Match the substances given in Column A with their uses given in Column B. A B(i)Gold(a)Thermometers(ii)Iron(b)Electric wire(iii)Aluminium(c)Wrapping food(iv)Carbon(d)Jewellery(v)Copper(e)Machinery(vi)Mercury(f)Fuel

Which of two - Oxygen or Nitrogen, can be used as refrigerent to preserve foods? Why ?

Fill in the blanks using proper words.(a) Rubber made by vulcanization is a ...... material.(b) Man-made materials are made by .......... natural materials.(c) ............. thread was developed simultaneously in New York and London.(d) Rayon is also known as ............

Give any formula for finding Unit of Rate for nth order

How do we know that anything is metal or non metal?

CaOCl2 is the product of reaction between calcium hydroxide and ___ and is commonly called as ___.

Which of the following metals on reaction with water releases hydrogen gas?

what is meant by 'presence of multiple bonds in conjugation'?

An ideal gas heat engine operate between 27°c and 127°c if it absorbs 10 kcal per cycle at higher temperature then amount of heat energy thrown to sink per cycle is

In collogative properties what is the role of solvents ?

Give one use of teflon.

Tick True/False against the following statements.(a) Fossilfuels can be made in the laboratory. (T / F)(b) CNGis more polluting fuel than petrol. (T / F)(c) Cokeis almost pure form of carbon. (T / F)(d) Coaltar is a mixture of various substances. (T / F)(e) Keroseneis not a fossil fuel. (T / F)

Write the preparation of bleaching powder and mention its uses.

Why is the atomic weight is also called as the relative atomic mass. Explain in a way I can understand.

The process of settling of rice in rice and water mixture is called ______ and pouring out the water without disturbing the rice is called _____.

18.Prove that 5 m3 volume of air is needed for the combustion of 1 m3 of a gas having following composition in % volume 50% H2 , 35% CH4,8% CO2,2% C2H4 and 5% non combustible mixture

CaOCl2 is the product of reaction between calcium hydroxide and _ and is commonly called as _.

The process of settling of rice in rice and water mixture is called __ and pouring out the water without disturbing the rice is called _.