15280 + Interview Questions in Chemistry Page 78 InterviewSolution

3851.	Conjuguez les verbes.1. préparer2. écouter3. aimer4. travailler5. grossir6. remplir7. réussir8. inviter
Answer» Conjuguez les verbes. 1. préparer 2. écouter 3. aimer 4. travailler 5. grossir 6. remplir 7. réussir 8. inviter

Discussion

3852.	Sum of nodal planes of highest occupied molecular orbital of O2+ and N2+ is
Answer» Sum of nodal planes of highest occupied molecular orbital of O2+ and N2+ is

Discussion

3853.	1 lit of river water contain 6mg Mgt2 and20mg Ca+2 ion as Cl- salts. Determine degree of hardness o f sample of river wate
Answer» 1 lit of river water contain 6mg Mgt2 and20mg Ca+2 ion as Cl- salts. Determine degree of hardness o f sample of river wate

Discussion

3854.	Eka aluminium predicted by Mendeleev is which element?
Answer» Eka aluminium predicted by Mendeleev is which element?

Discussion

3855.	(a) What happens when potassium iodide solution is added to lead nitrate solution? Give equation of the reaction involved. What type of reaction is represented by this example?(b) Give one example of another reaction which is of the same type as the above reaction.
Answer» (a) What happens when potassium iodide solution is added to lead nitrate solution? Give equation of the reaction involved. What type of reaction is represented by this example? (b) Give one example of another reaction which is of the same type as the above reaction.

Discussion

3856.	15. THe mass of N2F4 produced by 2.0g NH3 and 8.0g F2 is 3.56g according to the reaction 2NH3 + 5F2 = N2F4 +6HF THEN FIND PERCENT PER YIELD
Answer» 15. THe mass of N2F4 produced by 2.0g NH3 and 8.0g F2 is 3.56g according to the reaction 2NH3 + 5F2 = N2F4 +6HF THEN FIND PERCENT PER YIELD

Discussion

3857.	Are all reactions redox reactions?
Answer» Are all reactions redox reactions?

Discussion

3858.	Does any element in the periodic table have delta g=0.If so which are those elements?
Answer» Does any element in the periodic table have delta g=0.If so which are those elements?

Discussion

3859.	acidic strength order.explain R-CCH and CH3SH
Answer» acidic strength order.explain R-CCH and CH3SH

Discussion

3860.	Question 53An element A reacts with water to form a compound B which is used in whitewashing. The compound B on heating forms an oxide C which on treatment with water gives back B. Identify A, B and C and give the reactions involved.
Answer» Question 53 An element A reacts with water to form a compound B which is used in whitewashing. The compound B on heating forms an oxide C which on treatment with water gives back B. Identify A, B and C and give the reactions involved.

Discussion

3861.	What is Bose-Einstien Condenstate.
Answer» What is Bose-Einstien Condenstate.

Discussion

3862.	The IUPAC name of the following compound is? CH3−CH2−CH2−C\|HCH3−CH2−CH3\|CH−CH3
Answer» The IUPAC name of the following compound is? $C H_{3} - C H_{2} - C H_{2} - C \| H C H_{3} - C H_{2} - C H_{3} \| C H - C H_{3}$

3862.

The IUPAC name of the following compound is? CH3−CH2−CH2−C|HCH3−CH2−CH3|CH−CH3

Answer»

The IUPAC name of the following compound is?

$C H_{3} - C H_{2} - C H_{2} - C | H C H_{3} - C H_{2} - C H_{3} | C H - C H_{3}$

Discussion

3863.	(i) Write the equation for the reaction in the Haber process, that forms ammonia.(ii) State the purpose of liquefying ammonia produced in the process.
Answer» (i) Write the equation for the reaction in the Haber process, that forms ammonia. (ii) State the purpose of liquefying ammonia produced in the process.

Discussion

3864.	An ore on treatment with dilute HCl produces brisk effervescence. What type of reaction is this? What steps are required to obtain metal from enriched ore?
Answer» An ore on treatment with dilute HCl produces brisk effervescence. What type of reaction is this? What steps are required to obtain metal from enriched ore?

Discussion

3865.	HCL is not digesting any protein yet without HCL digestion of proteins is affected in the stomach.
Answer» HCL is not digesting any protein yet without HCL digestion of proteins is affected in the stomach.

Discussion

3866.	Zn on reaction with dilute HNO3 gives:[0.77 Mark]
Answer» $Z n$ on reaction with dilute $H N O_{3}$ gives: [0.77 Mark]

Discussion

3867.	In a mixture of gases ,the volume content of the gas is0 .06% at STP. Calculate the no. of molecules of the gas in 1litre of the mixture.
Answer» In a mixture of gases ,the volume content of the gas is0 .06% at STP. Calculate the no. of molecules of the gas in 1litre of the mixture.

Discussion

3868.	The products formed when an excess of NaOH solution is added to ZnSO4 solution are ____ and ____.
Answer» The products formed when an excess of NaOH solution is added to $Z n S O_{4}$ solution are ____ and ____.

Discussion

3869.	ntA constant volume gas thermometer shows pressure reading 50cm snd 90 cm of Hg at 0^°C and 100^° C respectively . When the pressure reading is 60 cm of Hg the temperature isn nta)25^°Cn ntB)40^°Cn ntC)15^°Cn ntD)12.5^°Cn
Answer» ntA constant volume gas thermometer shows pressure reading 50cm snd 90 cm of Hg at 0^°C and 100^° C respectively . When the pressure reading is 60 cm of Hg the temperature isn nta)25^°Cn ntB)40^°Cn ntC)15^°Cn ntD)12.5^°Cn

Discussion

3870.	In the following metals which one has lowest probable interatomic forces?
Answer» In the following metals which one has lowest probable interatomic forces?

Discussion

3871.	Define a chemical reaction. (2marks)
Answer» Define a chemical reaction. (2marks)

Discussion

3872.	Question 2Which of the following statements is correct?(a) All metals are ductile.(b) All non-metals are ductile.(c) Generally, metals are ductile.(d) Some non-metals are ductile.
Answer» Question 2 Which of the following statements is correct? (a) All metals are ductile. (b) All non-metals are ductile. (c) Generally, metals are ductile. (d) Some non-metals are ductile.

Discussion

3873.	Solubility of AgCl in 0.1 M calcium chloride solution is:(Ksp of AgCl=1.8×10–10)
Answer» Solubility of $A g C l$ in 0.1 M calcium chloride solution is: $(K_{s p} of A g C l = 1.8 \times 10^{- 10})$

Discussion

3874.	why is H3PO2 considered as a monobasic acid
Answer» why is H3PO2 considered as a monobasic acid

Discussion

3875.	In oxidation there is increase in positive electrovalency or removal of an electropositive element . What is the difference between +ve electrovalency and electro +ve element?
Answer» In oxidation there is increase in positive electrovalency or removal of an electropositive element . What is the difference between +ve electrovalency and electro +ve element?

Discussion

3876.	Which of the following electrons are most tightly bound by the nucleus ?a)4p b)5sc)4d d)5d
Answer» Which of the following electrons are most tightly bound by the nucleus ? a)4p b)5s c)4d d)5d

Discussion

3877.	Two spheres a and b having radii of 3 cm and 5 cm respectively are coated with carbon black on their surface. The wavelength of radiations corresponding to maximum intensity of emission are 300nm and 500nm respectively. The respective powers radiated bt them are in the ratio?
Answer» Two spheres a and b having radii of 3 cm and 5 cm respectively are coated with carbon black on their surface. The wavelength of radiations corresponding to maximum intensity of emission are 300nm and 500nm respectively. The respective powers radiated bt them are in the ratio?

Discussion

3878.	Give the name and structural formula of:(i) a saturated hydrocarbon(ii) an unsaturated hydrocarbon with a double bond.
Answer» Give the name and structural formula of: (i) a saturated hydrocarbon (ii) an unsaturated hydrocarbon with a double bond.

Discussion

3879.	The combining capacity of an element is known as its ______________.
Answer» The combining capacity of an element is known as its ______________.

Discussion

3880.	What is observed when to a solution of lead hydroxide, an excess of sodium hydroxide is added?
Answer» What is observed when to a solution of lead hydroxide, an excess of sodium hydroxide is added?

Discussion

3881.	in electrolysis how can the atoms have positively charged nuclei? And does the atom has positively charged hydrogen and positively charged oxygen, if that's so then how can oxygen go to the positive terminal and does the process of electrolysis separates the electrons from the atom?
Answer» in electrolysis how can the atoms have positively charged nuclei? And does the atom has positively charged hydrogen and positively charged oxygen, if that's so then how can oxygen go to the positive terminal and does the process of electrolysis separates the electrons from the atom?

Discussion

3882.	What weight of sulphuric acid will be required to dissolve 3 grams of magnesium carbonate?[Mg = 24, C = 12, O = 16]MgCO3 + H2SO4 → MgSO4 + H2O + CO2
Answer» What weight of sulphuric acid will be required to dissolve 3 grams of magnesium carbonate? [Mg = 24, C = 12, O = 16] MgCO₃ + H₂SO₄ $\overset{}{\to}$ MgSO₄ + H₂O + CO₂

Discussion

3883.	Question 43A sample of ethane (C2H6) gas has the same mass as 1.5×1020 molecules of methane (CH4). How many C2H6 molecules does the sample of gas contain?
Answer» Question 43 A sample of ethane $(C_{2} H_{6})$ gas has the same mass as $1.5 \times 10^{20}$ molecules of methane $(C H_{4})$ . How many $C_{2} H_{6}$ molecules does the sample of gas contain?

Discussion

3884.	Write the principle of distillation.
Answer» Write the principle of distillation.

Discussion

3885.	Silver articles turn black on exposure to air. This is an example of:
Answer» Silver articles turn black on exposure to air. This is an example of:

Discussion

3886.	21 Balance cl2+ naoh give nacl. + Naclo3+ H20 by ion electronic method
Answer» 21 Balance cl2+ naoh give nacl. + Naclo3+ H20 by ion electronic method

Discussion

3887.	When formaldehyde reacts with melamine, it forms:
Answer» When formaldehyde reacts with melamine, it forms:

Discussion

3888.	Write the molecular and structural formula fo a cyclid hydrocarbon whose molecule contains 8 atoms of carbon.
Answer» Write the molecular and structural formula fo a cyclid hydrocarbon whose molecule contains 8 atoms of carbon.

Discussion

3889.	How many structural isomers are possible for C4H10 molecule?
Answer» How many structural isomers are possible for C₄H₁₀ molecule?

Discussion

3890.	Choose the alternative which is closely resembles the water-image of the given combination.
Answer» Choose the alternative which is closely resembles the water-image of the given combination.

3890.

Choose the alternative which is closely resembles the water-image of the given combination.

Answer»

Choose the alternative which is closely resembles the water-image of the given combination.

Discussion

3891.	HCl is a strong acid because it ________ in water.
Answer» HCl is a strong acid because it ________ in water.

Discussion

3892.	Which compound of carbon can be used as a fuel?
Answer» Which compound of carbon can be used as a fuel?

Discussion

3893.	The most nonmetallic among the given elements is:
Answer» The most nonmetallic among the given elements is:

Discussion

3894.	assertion . mean free path of gas molecule varies inversely as density of the gas reason. mean free path varies inversely as pressure of the gas ?? what is correct explaination of assertio
Answer» assertion . mean free path of gas molecule varies inversely as density of the gas reason. mean free path varies inversely as pressure of the gas ?? what is correct explaination of assertio

Discussion

3895.	Molecule which contains only sigma bonds in it is
Answer» Molecule which contains only sigma bonds in it is

Discussion

3896.	Name the oxide of sulphur which reacts with water to give sulphuric acid.In the contact process, the direct reaction between oxide of sulphur and water is avoided. In this process, what does the oxide of sulphur react with instead of water, and what is the name of the product?
Answer» Name the oxide of sulphur which reacts with water to give sulphuric acid. In the contact process, the direct reaction between oxide of sulphur and water is avoided. In this process, what does the oxide of sulphur react with instead of water, and what is the name of the product?

Discussion

3897.	(i) Explain, why copper, though a good conductor of electricity, is a non-electrolyte.(ii) Name the gas released at the cathode when acidulated water is electrolysed.(iii) Explain, why solid sodium chloride does not allow electricity to pass through?(iv) Fill in the blanks:(a) As we descend the electrochemical series containing cations, the tendency of the cations to get _________ (oxidized/reduced) at the cathode increases.(b) The (higher/lower) __________ the concentration of an ion in a solution, the greater is the probability of its being discharged at its appropriate electrode.
Answer» (i) Explain, why copper, though a good conductor of electricity, is a non-electrolyte. (ii) Name the gas released at the cathode when acidulated water is electrolysed. (iii) Explain, why solid sodium chloride does not allow electricity to pass through? (iv) Fill in the blanks: (a) As we descend the electrochemical series containing cations, the tendency of the cations to get _________ (oxidized/reduced) at the cathode increases. (b) The (higher/lower) __________ the concentration of an ion in a solution, the greater is the probability of its being discharged at its appropriate electrode.

Discussion

3898.	Which of the following is the molecular formula for cyclopentene?
Answer» Which of the following is the molecular formula for cyclopentene?

Discussion

3899.	Given below id the reaction involved in the manufacture of ammonia: N2(g) + 3H2(g) ⇌ 2NH3(g) If 2 moles of nitrogen and 6 moles of hydrogen were made to react instead, how many moles of ammonia will be produced?4
Answer» Given below id the reaction involved in the manufacture of ammonia: $N_{2} (g) + 3 H_{2} (g) ⇌ 2 {NH}_{3} (g)$ If 2 moles of nitrogen and 6 moles of hydrogen were made to react instead, how many moles of ammonia will be produced? 4

Discussion

3900.	Calculate the number of: a) particles in 0.1 mole of any substance., b) hydrogen atoms in 0.1 mole of H2SO4, c) molecules in one kg of calcium chloride
Answer» Calculate the number of: a) particles in 0.1 mole of any substance., b) hydrogen atoms in 0.1 mole of H2SO4, c) molecules in one kg of calcium chloride

Discussion

Explore topic-wise InterviewSolutions in .

Conjuguez les verbes.1. préparer2. écouter3. aimer4. travailler5. grossir6. remplir7. réussir8. inviter

Sum of nodal planes of highest occupied molecular orbital of O2+ and N2+ is

1 lit of river water contain 6mg Mgt2 and20mg Ca+2 ion as Cl- salts. Determine degree of hardness o f sample of river wate

Eka aluminium predicted by Mendeleev is which element?

(a) What happens when potassium iodide solution is added to lead nitrate solution? Give equation of the reaction involved. What type of reaction is represented by this example?​(b) Give one example of another reaction which is of the same type as the above reaction.

15. THe mass of N2F4 produced by 2.0g NH3 and 8.0g F2 is 3.56g according to the reaction 2NH3 + 5F2 = N2F4 +6HF THEN FIND PERCENT PER YIELD

Are all reactions redox reactions?

Does any element in the periodic table have delta g=0.If so which are those elements?

acidic strength order.explain R-CCH and CH3SH

Question 53An element A reacts with water to form a compound B which is used in whitewashing. The compound B on heating forms an oxide C which on treatment with water gives back B. Identify A, B and C and give the reactions involved.

What is Bose-Einstien Condenstate.

The IUPAC name of the following compound is? CH3−CH2−CH2−C|HCH3−CH2−CH3|CH−CH3

(i) Write the equation for the reaction in the Haber process, that forms ammonia.(ii) State the purpose of liquefying ammonia produced in the process.

An ore on treatment with dilute HCl produces brisk effervescence. What type of reaction is this? What steps are required to obtain metal from enriched ore?

HCL is not digesting any protein yet without HCL digestion of proteins is affected in the stomach.

Zn on reaction with dilute HNO3 gives:[0.77 Mark]

In a mixture of gases ,the volume content of the gas is0 .06% at STP. Calculate the no. of molecules of the gas in 1litre of the mixture.

The products formed when an excess of NaOH solution is added to ZnSO4 solution are ____ and ____.

ntA constant volume gas thermometer shows pressure reading 50cm snd 90 cm of Hg at 0^°C and 100^° C respectively . When the pressure reading is 60 cm of Hg the temperature isn nta)25^°Cn ntB)40^°Cn ntC)15^°Cn ntD)12.5^°Cn

In the following metals which one has lowest probable interatomic forces?

Define a chemical reaction. (2marks)

Question 2Which of the following statements is correct?(a) All metals are ductile.(b) All non-metals are ductile.(c) Generally, metals are ductile.(d) Some non-metals are ductile.

Solubility of AgCl in 0.1 M calcium chloride solution is:(Ksp of AgCl=1.8×10–10)

why is H3PO2 considered as a monobasic acid

In oxidation there is increase in positive electrovalency or removal of an electropositive element . What is the difference between +ve electrovalency and electro +ve element?

Which of the following electrons are most tightly bound by the nucleus ?a)4p b)5sc)4d d)5d

Two spheres a and b having radii of 3 cm and 5 cm respectively are coated with carbon black on their surface. The wavelength of radiations corresponding to maximum intensity of emission are 300nm and 500nm respectively. The respective powers radiated bt them are in the ratio?

Give the name and structural formula of:(i) a saturated hydrocarbon(ii) an unsaturated hydrocarbon with a double bond.

The combining capacity of an element is known as its ______________.

What is observed when to a solution of lead hydroxide, an excess of sodium hydroxide is added?

in electrolysis how can the atoms have positively charged nuclei? And does the atom has positively charged hydrogen and positively charged oxygen, if that's so then how can oxygen go to the positive terminal and does the process of electrolysis separates the electrons from the atom?

What weight of sulphuric acid will be required to dissolve 3 grams of magnesium carbonate?[Mg = 24, C = 12, O = 16]MgCO3 + H2SO4 → MgSO4 + H2O + CO2

Question 43A sample of ethane (C2H6) gas has the same mass as 1.5×1020 molecules of methane (CH4). How many C2H6 molecules does the sample of gas contain?

Write the principle of distillation.

Silver articles turn black on exposure to air. This is an example of:

21 Balance cl2+ naoh give nacl. + Naclo3+ H20 by ion electronic method

When formaldehyde reacts with melamine, it forms:

Write the molecular and structural formula fo a cyclid hydrocarbon whose molecule contains 8 atoms of carbon.

How many structural isomers are possible for C4H10 molecule?

Choose the alternative which is closely resembles the water-image of the given combination.

HCl is a strong acid because it ________ in water.

Which compound of carbon can be used as a fuel?

The most nonmetallic among the given elements is:

assertion . mean free path of gas molecule varies inversely as density of the gas reason. mean free path varies inversely as pressure of the gas ?? what is correct explaination of assertio

Molecule which contains only sigma bonds in it is

Name the oxide of sulphur which reacts with water to give sulphuric acid.In the contact process, the direct reaction between oxide of sulphur and water is avoided. In this process, what does the oxide of sulphur react with instead of water, and what is the name of the product?

Which of the following is the molecular formula for cyclopentene?

Given below id the reaction involved in the manufacture of ammonia: N2(g) + 3H2(g) ⇌ 2NH3(g) If 2 moles of nitrogen and 6 moles of hydrogen were made to react instead, how many moles of ammonia will be produced?4

Calculate the number of: a) particles in 0.1 mole of any substance., b) hydrogen atoms in 0.1 mole of H2SO4, c) molecules in one kg of calcium chloride

(a) What happens when potassium iodide solution is added to lead nitrate solution? Give equation of the reaction involved. What type of reaction is represented by this example?(b) Give one example of another reaction which is of the same type as the above reaction.

The products formed when an excess of NaOH solution is added to ZnSO4 solution are and .