15280 + Interview Questions in Chemistry Page 230 InterviewSolution

11451.	Atomic size ___ from left to right in a period.
Answer» Atomic size ___ from left to right in a period.

Discussion

11452.	The structure of diamond and graphite is respectively:
Answer» The structure of diamond and graphite is respectively:

Discussion

11453.	Match the given compounds with the gas formed, when they react with HCl.
Answer» Match the given compounds with the gas formed, when they react with HCl.

Discussion

11454.	The electronic configuration of the atom of an element X is 2, 8, 4. In the modern periodic table, the element X is placed in : (a)2nd group (b)4th group (c)14th group (d)8th group
Answer» The electronic configuration of the atom of an element X is 2, 8, 4. In the modern periodic table, the element X is placed in : $(a) 2^{n d} g r o u p$ $(b) 4^{t h} g r o u p$ $(c) 14^{t h} g r o u p$ $(d) 8^{t h} g r o u p$

11454.

The electronic configuration of the atom of an element X is 2, 8, 4. In the modern periodic table, the element X is placed in : (a)2nd group (b)4th group (c)14th group (d)8th group

Answer»

The electronic configuration of the atom of an element X is 2, 8, 4. In the modern periodic table, the element X is placed in :

$(a) 2^{n d} g r o u p$ $(b) 4^{t h} g r o u p$ $(c) 14^{t h} g r o u p$ $(d) 8^{t h} g r o u p$

Discussion

11455.	Consider a solution having [H+]=10−5 M at 25∘C, then OH− ion concentration of this solution at the given temperature is :
Answer» Consider a solution having $[H^{+}] = 10^{- 5} M$ at $25^{\circ} C$ , then $O H^{-}$ ion concentration of this solution at the given temperature is :

Discussion

11456.	In the classification of the then known elements, Mendeleev was guided by two factors. What are those two factors?
Answer» In the classification of the then known elements, Mendeleev was guided by two factors. What are those two factors?

Discussion

11457.	Explain oxidation states.
Answer» Explain oxidation states.

Discussion

11458.	Which of the below given options are correct for the electrolysis of acidfied water with inert electrode?
Answer» Which of the below given options are correct for the electrolysis of acidfied water with inert electrode?

Discussion

11459.	The discomfort which is common between vinegar and curd is that they : (a) have sweet taste (b) have bitter taste (c) baking soda (d) have sour taste
Answer» The discomfort which is common between vinegar and curd is that they : (a) have sweet taste (b) have bitter taste (c) baking soda (d) have sour taste

11459.

The discomfort which is common between vinegar and curd is that they : (a) have sweet taste (b) have bitter taste (c) baking soda (d) have sour taste

Answer»

The discomfort which is common between vinegar and curd is that they :

(a) have sweet taste

(b) have bitter taste

(c) baking soda

(d) have sour taste

Discussion

11460.	Explain the formation of ozone. [2 MARKS]
Answer» Explain the formation of ozone. [2 MARKS]

Discussion

11461.	Which of the below given reactions is not a redox reaction?
Answer» Which of the below given reactions is not a redox reaction?

Discussion

11462.	Which one of the following shows positional isomerism of
Answer» Which one of the following shows positional isomerism of

11462.

Which one of the following shows positional isomerism of

Answer»

Which one of the following shows positional isomerism of

Discussion

11463.	Is decomposition of vegetable is exothermic or endothermic reaction? If it is exothermic reaction than what type of decomposition reaction is this?
Answer» Is decomposition of vegetable is exothermic or endothermic reaction? If it is exothermic reaction than what type of decomposition reaction is this?

Discussion

11464.	Why is the amount of gas collected in one of the test tubes in Activity 1.7 double of the amount collected in the other? Name this gas.
Answer» Why is the amount of gas collected in one of the test tubes in Activity 1.7 double of the amount collected in the other? Name this gas.

Discussion

11465.	What is exothermic reaction?
Answer» What is exothermic reaction?

Discussion

11466.	Iron does burn on heating but iron fillings burns vigorously when sprinkled in the flame of the burner. Why does iron fillings burns but iron does not burn on heating?
Answer» Iron does burn on heating but iron fillings burns vigorously when sprinkled in the flame of the burner. Why does iron fillings burns but iron does not burn on heating?

Discussion

11467.	Arrange the non metals iodine, fluorine, bromine, chlorine in decreasing order of their reactivity.
Answer» Arrange the non metals iodine, fluorine, bromine, chlorine in decreasing order of their reactivity.

Discussion

11468.	If there are exceptions in metal and non-metals then why they are not added in metalloids?
Answer» If there are exceptions in metal and non-metals then why they are not added in metalloids?

Discussion

11469.	What happens when ethene gas is treated with HCl?
Answer» What happens when ethene gas is treated with HCl?

Discussion

11470.	2 grams of Lead Nitrate powder is taken in a boiling tube . It is heated over flame. Name the residue left.
Answer» 2 grams of Lead Nitrate powder is taken in a boiling tube . It is heated over flame. Name the residue left.

Discussion

11471.	Which of the following is not an example of a primary cell?
Answer» Which of the following is not an example of a primary cell?

Discussion

11472.	electron affinity? (trends of modern table)
Answer» electron affinity? (trends of modern table)

Discussion

11473.	The property of metal by which it can be drawn into wires is called_______.
Answer» The property of metal by which it can be drawn into wires is called_______.

Discussion

11474.	Any shortcut or easy way to learn reactivity series
Answer» Any shortcut or easy way to learn reactivity series

Discussion

11475.	Match the column I (cells of the stomach ) with II (their secretions ) : Column I Column II i.Peptic cells a.HCl ii. Oxyntic cells b. Proenzymes iii. G cells c. Mucus iv. Mucous cells d. Gastrin
Answer» Match the column I (cells of the stomach ) with II (their secretions ) : Column I Column II i.Peptic cells a.HCl ii. Oxyntic cells b. Proenzymes iii. G cells c. Mucus iv. Mucous cells d. Gastrin

11475.

Match the column I (cells of the stomach ) with II (their secretions ) : Column I Column II i.Peptic cells a.HCl ii. Oxyntic cells b. Proenzymes iii. G cells c. Mucus iv. Mucous cells d. Gastrin

Answer»

Match the column I (cells of the stomach ) with II (their secretions ) :

Column I Column II

i.Peptic cells a.HCl

ii. Oxyntic cells b. Proenzymes

iii. G cells c. Mucus

iv. Mucous cells d. Gastrin

Discussion

11476.	The melting point of the symmetrical alkanes is:
Answer» The melting point of the symmetrical alkanes is:

Discussion

11477.	What happens when chlorine gas reacts with excess ammonia?
Answer» What happens when chlorine gas reacts with excess ammonia?

Discussion

11478.	Question 5(b) Write word equations and then balanced equations for the reaction taking place when: (b) Dilute hydrochloric acid reacts with magnesium ribbon
Answer» Question 5(b) Write word equations and then balanced equations for the reaction taking place when: (b) Dilute hydrochloric acid reacts with magnesium ribbon

Discussion

11479.	Write electronic configuration of element 3517 T. (a) What is the group number of T? (b) What is the period number of T? (c) How many valence electrons are there in an atom of T? (d) What is the valency of T? (e) Is it a metal or a non-metal? (f) State number of protons and neutrons in T.
Answer» Write electronic configuration of element $3517$ T. (a) What is the group number of T? (b) What is the period number of T? (c) How many valence electrons are there in an atom of T? (d) What is the valency of T? (e) Is it a metal or a non-metal? (f) State number of protons and neutrons in T.

11479.

Write electronic configuration of element 3517 T. (a) What is the group number of T? (b) What is the period number of T? (c) How many valence electrons are there in an atom of T? (d) What is the valency of T? (e) Is it a metal or a non-metal? (f) State number of protons and neutrons in T.

Answer»

Write electronic configuration of element $3517$ T.

(a) What is the group number of T?

(b) What is the period number of T?

(c) How many valence electrons are there in an atom of T?

(d) What is the valency of T?

(e) Is it a metal or a non-metal?

(f) State number of protons and neutrons in T.

Discussion

11480.	State what do you observe when: Neutral litmus solution is added to alkaline solution.
Answer» State what do you observe when: Neutral litmus solution is added to alkaline solution.

11480.

State what do you observe when: Neutral litmus solution is added to alkaline solution.

Answer»

State what do you observe when:

Neutral litmus solution is added to alkaline solution.

Discussion

11481.	Copy and complete the following table which relates to three homologous series of hydrocarbons: [5 MARKS] General FormulaCnH2nCnH2n−2CnH2n+2IUPAC name of the homologous seriesCharacteristic bond typeSinglebondIUPAC name of the first member of the seriesTypes of reaction with chlorineAddition
Answer» Copy and complete the following table which relates to three homologous series of hydrocarbons: [5 MARKS] $\begin{matrix} G e n e r a l F o r m u l a & C_{n} H_{2 n} & C_{n} H_{2 n - 2} & C_{n} H_{2 n + 2} I U P A C n a m e o f t h e h o m o l o g o u s s e r i e s C h a r a c t e r i s t i c b o n d t y p e & S i n g l e b o n d I U P A C n a m e o f t h e f i r s t m e m b e r o f t h e s e r i e s T y p e s o f r e a c t i o n w i t h c h l o r i n e & A d d i t i o n \end{matrix}$

Discussion

11482.	What raw materials are required for steel making?
Answer» What raw materials are required for steel making?

Discussion

11483.	What is cathode reaction and anode reaction in cathodic protection ?
Answer» What is cathode reaction and anode reaction in cathodic protection ?

Discussion

11484.	Which substance is taken orally to slow down the growth of bacteria?
Answer» Which substance is taken orally to slow down the growth of bacteria?

Discussion

11485.	When copper is exposed to moist air for a long time then a layer deposits on its surface due to corrosion. The colour of this layer is:
Answer» When copper is exposed to moist air for a long time then a layer deposits on its surface due to corrosion. The colour of this layer is:

Discussion

11486.	Among the following the element with highest first ionization energy is:
Answer» Among the following the element with highest first ionization energy is:

Discussion

11487.	Answer the following questions : (a) Why is graphite a good conductor of electricity but not diamond ? (b) Why is diamond very hard ? (c) What are fullerenes ? Name the most common fullerene. (d) What impurity is present in black diamond ?
Answer» Answer the following questions : (a) Why is graphite a good conductor of electricity but not diamond ? (b) Why is diamond very hard ? (c) What are fullerenes ? Name the most common fullerene. (d) What impurity is present in black diamond ?

11487.

Answer the following questions : (a) Why is graphite a good conductor of electricity but not diamond ? (b) Why is diamond very hard ? (c) What are fullerenes ? Name the most common fullerene. (d) What impurity is present in black diamond ?

Answer»

Answer the following questions :

(a) Why is graphite a good conductor of electricity but not diamond ?

(b) Why is diamond very hard ?

(c) What are fullerenes ? Name the most common fullerene.

(d) What impurity is present in black diamond ?

Discussion

11488.	Define the following terms. (i) Relative molecular mass (ii) Vapour density
Answer» Define the following terms. (i) Relative molecular mass (ii) Vapour density

Discussion

11489.	C2H6 is the molecular formula of:
Answer» C2H6 is the molecular formula of:

Discussion

11490.	In the Bohr model of the hydrogen atom, let R, V and E represent the radius of the orbit, speed of the electron and the total energy of the electron respectively. Which of the following quantities are proportional to the quantum number n ?
Answer» In the Bohr model of the hydrogen atom, let R, V and E represent the radius of the orbit, speed of the electron and the total energy of the electron respectively. Which of the following quantities are proportional to the quantum number n ?

Discussion

11491.	Which is a stronger acid- dil. HCL or conc.H2CO3.please give reasons
Answer» Which is a stronger acid- dil. HCL or conc.H2CO3.please give reasons

Discussion

11492.	Choose unsaturated compounds from the following.
Answer» Choose unsaturated compounds from the following.

Discussion

11493.	Byju's chem sir told me that C-C is power then C=C ;but my school teacher told me opposite of it so which one is correct??????
Answer» Byju's chem sir told me that C-C is power then C=C ;but my school teacher told me opposite of it so which one is correct??????

Discussion

11494.	Write the IUPAC names of the following: [5 MARKS]
Answer» Write the IUPAC names of the following: [5 MARKS]

Discussion

11495.	Give one example each of a salt which gives an aqueous solution having : (a) pH less than 7 (b) pH equal to 7 (c) pH more than 7
Answer» Give one example each of a salt which gives an aqueous solution having : (a) pH less than 7 (b) pH equal to 7 (c) pH more than 7

11495.

Give one example each of a salt which gives an aqueous solution having : (a) pH less than 7 (b) pH equal to 7 (c) pH more than 7

Answer»

Give one example each of a salt which gives an aqueous solution having :

(a) pH less than 7

(b) pH equal to 7

(c) pH more than 7

Discussion

11496.	IN CHEMICAL COMPOUND C6H9COOH HOW MANY ISOMERS CAN BE DO
Answer» IN CHEMICAL COMPOUND C6H9COOH HOW MANY ISOMERS CAN BE DO

Discussion

11497.	When a dilute acid X reacts with sodium carbonate, then sodium chloride, gas Y and water are formed. A gas Y is formed in the form of brisk effervescence.What is gas Y?
Answer» When a dilute acid X reacts with sodium carbonate, then sodium chloride, gas Y and water are formed. A gas Y is formed in the form of brisk effervescence.What is gas Y?

Discussion

11498.	Identify the functional group in the compound given below:
Answer» Identify the functional group in the compound given below:

11498.

Identify the functional group in the compound given below:

Answer»

Identify the functional group in the compound given below:

Discussion

11499.	Which carbon to carbon bond is the stronger than the other?( In the video it said single bond is strongest but in my books it is written triple bond is strongest)
Answer» Which carbon to carbon bond is the stronger than the other?( In the video it said single bond is strongest but in my books it is written triple bond is strongest)

Discussion

11500.	The I.S.I. mark is not given on which of the following items?
Answer» The I.S.I. mark is not given on which of the following items?

Discussion

Explore topic-wise InterviewSolutions in .

Atomic size ___ from left to right in a period.

The structure of diamond and graphite is respectively:

Match the given compounds with the gas formed, when they react with HCl.

The electronic configuration of the atom of an element X is 2, 8, 4. In the modern periodic table, the element X is placed in : (a)2nd group (b)4th group (c)14th group (d)8th group

Consider a solution having [H+]=10−5 M at 25∘C, then OH− ion concentration of this solution at the given temperature is :

In the classification of the then known elements, Mendeleev was guided by two factors. What are those two factors?

Explain oxidation states.

Which of the below given options are correct for the electrolysis of acidfied water with inert electrode?

The discomfort which is common between vinegar and curd is that they : (a) have sweet taste (b) have bitter taste (c) baking soda (d) have sour taste

Explain the formation of ozone. [2 MARKS]

Which of the below given reactions is not a redox reaction?

Which one of the following shows positional isomerism of

Is decomposition of vegetable is exothermic or endothermic reaction? If it is exothermic reaction than what type of decomposition reaction is this?

Why is the amount of gas collected in one of the test tubes in Activity 1.7 double of the amount collected in the other? Name this gas.

What is exothermic reaction?

Iron does burn on heating but iron fillings burns vigorously when sprinkled in the flame of the burner. ​​​​​​Why does iron fillings burns but iron does not burn on heating?

Arrange the non metals iodine, fluorine, bromine, chlorine in decreasing order of their reactivity.

If there are exceptions in metal and non-metals then why they are not added in metalloids?

What happens when ethene gas is treated with HCl?

2 grams of Lead Nitrate powder is taken in a boiling tube . It is heated over flame. Name the residue left.

Which of the following is not an example of a primary cell?

electron affinity? (trends of modern table)

The property of metal by which it can be drawn into wires is called_______.

Any shortcut or easy way to learn reactivity series

Match the column I (cells of the stomach ) with II (their secretions ) : Column I Column II i.Peptic cells a.HCl ii. Oxyntic cells b. Proenzymes iii. G cells c. Mucus iv. Mucous cells d. Gastrin

The melting point of the symmetrical alkanes is:

What happens when chlorine gas reacts with excess ammonia?

Question 5(b) Write word equations and then balanced equations for the reaction taking place when: (b) Dilute hydrochloric acid reacts with magnesium ribbon

Write electronic configuration of element 3517 T. (a) What is the group number of T? (b) What is the period number of T? (c) How many valence electrons are there in an atom of T? (d) What is the valency of T? (e) Is it a metal or a non-metal? (f) State number of protons and neutrons in T.

State what do you observe when: Neutral litmus solution is added to alkaline solution.

Copy and complete the following table which relates to three homologous series of hydrocarbons: [5 MARKS] General FormulaCnH2nCnH2n−2CnH2n+2IUPAC name of the homologous seriesCharacteristic bond typeSinglebondIUPAC name of the first member of the seriesTypes of reaction with chlorineAddition

What raw materials are required for steel making?

What is cathode reaction and anode reaction in cathodic protection ?

Which substance is taken orally to slow down the growth of bacteria?

When copper is exposed to moist air for a long time then a layer deposits on its surface due to corrosion. The colour of this layer is:

Among the following the element with highest first ionization energy is:

Answer the following questions : (a) Why is graphite a good conductor of electricity but not diamond ? (b) Why is diamond very hard ? (c) What are fullerenes ? Name the most common fullerene. (d) What impurity is present in black diamond ?

Define the following terms. (i) Relative molecular mass (ii) Vapour density

C2H6 is the molecular formula of:

In the Bohr model of the hydrogen atom, let R, V and E represent the radius of the orbit, speed of the electron and the total energy of the electron respectively. Which of the following quantities are proportional to the quantum number n ?

Which is a stronger acid- dil. HCL or conc.H2CO3.please give reasons

Choose unsaturated compounds from the following.

Byju's chem sir told me that C-C is power then C=C ;but my school teacher told me opposite of it so which one is correct??????

Write the IUPAC names of the following: [5 MARKS]

Give one example each of a salt which gives an aqueous solution having : (a) pH less than 7 (b) pH equal to 7 (c) pH more than 7

IN CHEMICAL COMPOUND C6H9COOH HOW MANY ISOMERS CAN BE DO

When a dilute acid X reacts with sodium carbonate, then sodium chloride, gas Y and water are formed. A gas Y is formed in the form of brisk effervescence.What is gas Y?

Identify the functional group in the compound given below:

Which carbon to carbon bond is the stronger than the other?( In the video it said single bond is strongest but in my books it is written triple bond is strongest)

The I.S.I. mark is not given on which of the following items?

Iron does burn on heating but iron fillings burns vigorously when sprinkled in the flame of the burner. Why does iron fillings burns but iron does not burn on heating?