15280 + Interview Questions in Chemistry Page 102 InterviewSolution

5051.	what is electropositive and electronegative elements?
Answer» what is electropositive and electronegative elements?

Discussion

5052.	15.What are anti-protons and mesons?
Answer» 15.What are anti-protons and mesons?

Discussion

5053.	Question 40Give the characteristic tests for the following gases(a) CO2(b) SO2(c) O2(d) H2
Answer» Question 40 Give the characteristic tests for the following gases (a) ${CO}_{2}$ (b) ${SO}_{2}$ (c) $O_{2}$ (d) $H_{2}$

Discussion

5054.	Question 4 (a) What properties do all elements in the same column of the periodic table as boron have in common?
Answer» Question 4 (a) What properties do all elements in the same column of the periodic table as boron have in common?

Discussion

5055.	Why hybridized orbital can not form pi bond?
Answer» Why hybridized orbital can not form pi bond?

Discussion

5056.	Correct the following statements:(a) Copper reacts with nitric acid to produce nitrogen dioxide.(b) Haematite is the chief ore of aluminium.
Answer» Correct the following statements: (a) Copper reacts with nitric acid to produce nitrogen dioxide. (b) Haematite is the chief ore of aluminium.

Discussion

5057.	two pure liquids A and B have vapour pressures in the ratio 1:3. The mole fraction of A in vapour phase, when A and B are mixed in 1:3 molar ratio in a solution will be: a-0.1 b-0.2 c-0.3 d-0.5
Answer» two pure liquids A and B have vapour pressures in the ratio 1:3. The mole fraction of A in vapour phase, when A and B are mixed in 1:3 molar ratio in a solution will be: a-0.1 b-0.2 c-0.3 d-0.5

Discussion

5058.	Arrange the strength of single bond, double bond and triple bond in increasing order.
Answer» Arrange the strength of single bond, double bond and triple bond in increasing order.

Discussion

5059.	Which of the following is undergoing substitution reaction?
Answer» Which of the following is undergoing substitution reaction?

Discussion

5060.	Define RMM based on hydrogen as well as carbon-12 scale.
Answer» Define RMM based on hydrogen as well as carbon-12 scale.

Discussion

5061.	what is effective atomic number?
Answer» what is effective atomic number?

Discussion

5062.	Volume occupied by a gas at one atmospheric pressure and 0∘ C is V ml. Its volume at 273 K will be
Answer» Volume occupied by a gas at one atmospheric pressure and 0 $^{\circ}$ C is V ml. Its volume at 273 K will be

Discussion

5063.	pressure of 1 mole of an ideal gas undergoing a process is P=P_0/(1+\lbrack V/V_{0_{}}\rbrack^n),where P_0 and V_0 are cons†an ts.The temperature of the gas at volume V=V_0 is ?
Answer» pressure of 1 mole of an ideal gas undergoing a process is P=P_0/(1+\lbrack V/V_{0_{}}\rbrack^n),where P_0 and V_0 are cons†an ts.The temperature of the gas at volume V=V_0 is ?

Discussion

5064.	what is displacement?
Answer» what is displacement?

Discussion

5065.	Which shape does Nitric Acid molecule has?
Answer» Which shape does Nitric Acid molecule has?

Discussion

5066.	The electrolytic decomposition of water gives H2 and O2 in the ratio of
Answer» The electrolytic decomposition of water gives $H_{2}$ and $O_{2}$ in the ratio of

Discussion

5067.	All the X are Y but all Y are not X. What are X and Y?
Answer» All the X are Y but all Y are not X. What are X and Y?

Discussion

5068.	25 excluded volume of molecule in motion is how times ,actual volume of molecule inrest ??explain how occur
Answer» 25 excluded volume of molecule in motion is how times ,actual volume of molecule inrest ??explain how occur

Discussion

5069.	Identify the least stable ion among the following.
Answer» Identify the least stable ion among the following.

Discussion

5070.	avg molecular mass of a mixture of gas containing N and CO2 is 36. The mixture contain 280gm of N, therefore the amt of CO2 present in the mixture is
Answer» avg molecular mass of a mixture of gas containing N and CO2 is 36. The mixture contain 280gm of N, therefore the amt of CO2 present in the mixture is

Discussion

5071.	How many atoms are contained in one litre of water at 27 degrees Celsius and one atmp
Answer» How many atoms are contained in one litre of water at 27 degrees Celsius and one atmp

Discussion

5072.	When RC ≡ N reacts with Na/C2H5OH to give RCH2NH2then name of the reaction is ?
Answer» When RC ≡ N reacts with Na/C2H5OH to give RCH2NH2 then name of the reaction is ?

Discussion

5073.	Define the following terms: (a) Chemical bond (b) Effervescence (c) Precipitate
Answer» Define the following terms: (a) Chemical bond (b) Effervescence (c) Precipitate

5073.

Define the following terms: (a) Chemical bond (b) Effervescence (c) Precipitate

Answer»

Define the following terms:

(a) Chemical bond

(b) Effervescence

(c) Precipitate

Discussion

5074.	what is the z-effective of 4s and 3d e^- of zinc
Answer» what is the z-effective of 4s and 3d e^- of zinc

Discussion

5075.	One litre solution of N/2 HCl is heated in a beaker. It was observed that when the volume of solution is reduced to 600 mL , 3.25 g of HCl is lost. Calculate the normality of new solution.
Answer» One litre solution of N/2 HCl is heated in a beaker. It was observed that when the volume of solution is reduced to 600 mL , 3.25 g of HCl is lost. Calculate the normality of new solution.

Discussion

5076.	26. Find pH of final solution if 30ml 0.1M NaOH and 30ml 0.3M CH3COOH is mixed ?
Answer» 26. Find pH of final solution if 30ml 0.1M NaOH and 30ml 0.3M CH3COOH is mixed ?

Discussion

5077.	Mention pinacole pinacolon reaction mechanism in the following parts
Answer» Mention pinacole pinacolon reaction mechanism in the following parts

Discussion

5078.	Is the distilled water acidic/basic/neutral? How would you verify it?
Answer» Is the distilled water acidic/basic/neutral? How would you verify it?

Discussion

5079.	From where does the expression came ∆t=4/9∆o
Answer» From where does the expression came ∆t=4/9∆o

Discussion

5080.	What mass of NaCl would contain the same number of ions as 245g of MgCl2?
Answer» What mass of NaCl would contain the same number of ions as 245g of MgCl2?

Discussion

5081.	69 The no of geometrical isomers for octahedral [CoCl4(NH3)2 ]-, square planar [AuBr2Cl2]-, and [PtCl2(en) ] are
Answer» 69 The no of geometrical isomers for octahedral [CoCl4(NH3)2 ]-, square planar [AuBr2Cl2]-, and [PtCl2(en) ] are

Discussion

5082.	CO2(g) + H2(g) → CO(g) + H2O(g)In the above reaction, is oxidised.
Answer» ${CO}_{2} (g) + H_{2} (g) \to CO (g) + H_{2} O (g)$ In the above reaction, is oxidised.

Discussion

5083.	Find the average Speed of nitrogen molecules at 27 degree Celsius.
Answer» Find the average Speed of nitrogen molecules at 27 degree Celsius.

Discussion

5084.	Arrange following in decreading order of Kb(ebulleoscopic cons†an t) a. water b. benzene c. chloroform d. carbon tetrachloride (CCl4
Answer» Arrange following in decreading order of Kb(ebulleoscopic cons†an t) a. water b. benzene c. chloroform d. carbon tetrachloride (CCl4

Discussion

5085.	π bonding is not involved in a 1)ferrocene;2)dibenzene chromin;3)zeise's salt 4)grignard reaent
Answer» π bonding is not involved in a 1)ferrocene;2)dibenzene chromin;3)zeise's salt 4)grignard reaent

Discussion

5086.	Terrycot is made by mixing two types of fibres. Write the names of the fibres.
Answer» Terrycot is made by mixing two types of fibres. Write the names of the fibres.

Discussion

5087.	Give scientific reasons.a. Foam accumulates on a the surface of ‘dal’ kept for a long time in summer.b. Why are naphthalene balls kept with clothes to be put away.
Answer» Give scientific reasons. a. Foam accumulates on a the surface of ‘dal’ kept for a long time in summer. b. Why are naphthalene balls kept with clothes to be put away.

Discussion

5088.	Why is the common name of 2-methyl-pentane called 'iso-butane'? What is the meaning of the word 'iso'? And, why is it called 'butane' when the longest possible continuous carbon chain is carrying 3 carbon atoms instead of 4?
Answer» Why is the common name of 2-methyl-pentane called 'iso-butane'? What is the meaning of the word 'iso'? And, why is it called 'butane' when the longest possible continuous carbon chain is carrying 3 carbon atoms instead of 4?

Discussion

5089.	Three elements X,Y and Z are in the 3rd period of the periodic table. The oxides of X,Y and Z, respectively, are basic, amphoteric and acidic. The correct order of the atomic numbers of X,Y and Z is :
Answer» Three elements $X, Y$ and $Z$ are in the $3^{r d}$ period of the periodic table. The oxides of $X, Y$ and $Z$ , respectively, are basic, amphoteric and acidic. The correct order of the atomic numbers of $X, Y$ and $Z$ is :

Discussion

5090.	23.Element X forms five stable oxides with oxygen of formula X2o, Xo, X2o3, X2o4, X2o5. The formation of these oxides explain 1) law of definite proportion 2) law of partial pressure 3) law of multiple proportion 4) law of reciprocal proportion
Answer» 23.Element X forms five stable oxides with oxygen of formula X2o, Xo, X2o3, X2o4, X2o5. The formation of these oxides explain 1) law of definite proportion 2) law of partial pressure 3) law of multiple proportion 4) law of reciprocal proportion

Discussion

5091.	Which of the following ligands is expected to be bidentate?
Answer» Which of the following ligands is expected to be bidentate?

Discussion

5092.	Which of the following element has the greatest affinity among the halogens?
Answer» Which of the following element has the greatest affinity among the halogens?

Discussion

5093.	Assertion (A) : The conductivity of aqueous solution is greater than pure water. Reason (R): Conductivity depends upon number of ions present in solution.
Answer» Assertion (A) : The conductivity of aqueous solution is greater than pure water. Reason (R): Conductivity depends upon number of ions present in solution.

5093.

Assertion (A) : The conductivity of aqueous solution is greater than pure water. Reason (R): Conductivity depends upon number of ions present in solution.

Answer»

Assertion (A) : The conductivity of aqueous solution is greater than pure water.

Reason (R): Conductivity depends upon number of ions present in solution.

Discussion

5094.	Which of these chemical equations is not balanced?
Answer» Which of these chemical equations is not balanced?

Discussion

5095.	Which kind of bond is formed when metals combine with non-metals?
Answer» Which kind of bond is formed when metals combine with non-metals?

Discussion

5096.	Can you please provide me with all important questions of acids, bases and salts
Answer» Can you please provide me with all important questions of acids, bases and salts

Discussion

5097.	Which of the following salt is responsible for the temporary hardness of water?
Answer» Which of the following salt is responsible for the temporary hardness of water?

Discussion

5098.	How to find pH of acetic acid mathematically?
Answer» How to find pH of acetic acid mathematically?

Discussion

5099.	The original cost of the asset is Rs.2,50,000. The freight and installation charges amounted to Rs.25,000. The useful life of the assets 10 years and net residual value is estimated to be Rs. 50,000. Calculate the amount of depreciation to be charged every year under straight-line method for the year ended 31st December 2016, in each of the following conditions. (i) When the asset has been purchased on 1st January 2016. (ii) When the asset has been purchased on 1st Aril, 2016.
Answer» The original cost of the asset is Rs.2,50,000. The freight and installation charges amounted to Rs.25,000. The useful life of the assets 10 years and net residual value is estimated to be Rs. 50,000. Calculate the amount of depreciation to be charged every year under straight-line method for the year ended 31st December 2016, in each of the following conditions. (i) When the asset has been purchased on 1st January 2016. (ii) When the asset has been purchased on 1st Aril, 2016.

Discussion

5100.	State four differences between electrovalent and covalent compounds.
Answer» State four differences between electrovalent and covalent compounds.

Discussion

Explore topic-wise InterviewSolutions in .

what is electropositive and electronegative elements?

15.What are anti-protons and mesons?

Question 40Give the characteristic tests for the following gases(a) CO2(b) SO2(c) O2(d) H2

Question 4 (a) What properties do all elements in the same column of the periodic table as boron have in common?

Why hybridized orbital can not form pi bond?

Correct the following statements:(a) Copper reacts with nitric acid to produce nitrogen dioxide.(b) Haematite is the chief ore of aluminium.

two pure liquids A and B have vapour pressures in the ratio 1:3. The mole fraction of A in vapour phase, when A and B are mixed in 1:3 molar ratio in a solution will be: a-0.1 b-0.2 c-0.3 d-0.5

Arrange the strength of single bond, double bond and triple bond in increasing order.

Which of the following is undergoing substitution reaction?

Define RMM based on hydrogen as well as carbon-12 scale.

what is effective atomic number?

Volume occupied by a gas at one atmospheric pressure and 0∘ C is V ml. Its volume at 273 K will be

pressure of 1 mole of an ideal gas undergoing a process is P=P_0/(1+\lbrack V/V_{0_{}}\rbrack^n),where P_0 and V_0 are cons†an ts.The temperature of the gas at volume V=V_0 is ?

what is displacement?

Which shape does Nitric Acid molecule has?

The electrolytic decomposition of water gives H2 and O2 in the ratio of

All the X are Y but all Y are not X. What are X and Y?

25 excluded volume of molecule in motion is how times ,actual volume of molecule inrest ??explain how occur

Identify the least stable ion among the following.

avg molecular mass of a mixture of gas containing N and CO2 is 36. The mixture contain 280gm of N, therefore the amt of CO2 present in the mixture is

How many atoms are contained in one litre of water at 27 degrees Celsius and one atmp

When RC ≡ N reacts with Na/C2H5OH to give RCH2NH2then name of the reaction is ?

Define the following terms: (a) Chemical bond (b) Effervescence (c) Precipitate

what is the z-effective of 4s and 3d e^- of zinc

One litre solution of N/2 HCl is heated in a beaker. It was observed that when the volume of solution is reduced to 600 mL , 3.25 g of HCl is lost. Calculate the normality of new solution.

26. Find pH of final solution if 30ml 0.1M NaOH and 30ml 0.3M CH3COOH is mixed ?

Mention pinacole pinacolon reaction mechanism in the following parts

Is the distilled water acidic/basic/neutral? How would you verify it?

From where does the expression came ∆t=4/9∆o

What mass of NaCl would contain the same number of ions as 245g of MgCl2?

69 The no of geometrical isomers for octahedral [CoCl4(NH3)2 ]-, square planar [AuBr2Cl2]-, and [PtCl2(en) ] are

CO2(g) + H2(g) → CO(g) + H2O(g)In the above reaction, is oxidised.

Find the average Speed of nitrogen molecules at 27 degree Celsius.

Arrange following in decreading order of Kb(ebulleoscopic cons†an t) a. water b. benzene c. chloroform d. carbon tetrachloride (CCl4

π bonding is not involved in a 1)ferrocene;2)dibenzene chromin;3)zeise's salt 4)grignard reaent

Terrycot is made by mixing two types of fibres. Write the names of the fibres.​

Give scientific reasons.a. Foam accumulates on a the surface of ‘dal’ kept for a long time in summer.b. Why are naphthalene balls kept with clothes to be put away.

Why is the common name of 2-methyl-pentane called 'iso-butane'? What is the meaning of the word 'iso'? And, why is it called 'butane' when the longest possible continuous carbon chain is carrying 3 carbon atoms instead of 4?

Three elements X,Y and Z are in the 3rd period of the periodic table. The oxides of X,Y and Z, respectively, are basic, amphoteric and acidic. The correct order of the atomic numbers of X,Y and Z is :

23.Element X forms five stable oxides with oxygen of formula X2o, Xo, X2o3, X2o4, X2o5. The formation of these oxides explain 1) law of definite proportion 2) law of partial pressure 3) law of multiple proportion 4) law of reciprocal proportion

Which of the following ligands is expected to be bidentate?

Which of the following element has the greatest affinity among the halogens?

Assertion (A) : The conductivity of aqueous solution is greater than pure water. Reason (R): Conductivity depends upon number of ions present in solution.

Which of these chemical equations is not balanced?

Which kind of bond is formed when metals combine with non-metals?

Can you please provide me with all important questions of acids, bases and salts

Which of the following salt is responsible for the temporary hardness of water?

How to find pH of acetic acid mathematically?

State four differences between electrovalent and covalent compounds.

Terrycot is made by mixing two types of fibres. Write the names of the fibres.