15280 + Interview Questions in Chemistry Page 163 InterviewSolution

8101.	Which of the following is not a non-metal?
Answer» Which of the following is not a non-metal?

Discussion

8102.	Can corrosion of metal be an advantage
Answer» Can corrosion of metal be an advantage

Discussion

8103.	In acidic medium, H2O2 changes Cr2O7^-2 to Cr2O5 which has two (-O-O-) bonds. Oxidation state of Cr in CrO5 is [AIPMT - 2014](1.) +5 (2.) +3(3.) +6 (4.) -10
Answer» In acidic medium, H2O2 changes Cr2O7^-2 to Cr2O5 which has two (-O-O-) bonds. Oxidation state of Cr in CrO5 is [AIPMT - 2014] (1.) +5 (2.) +3 (3.) +6 (4.) -10

Discussion

8104.	Which of the following is the smallest in size?
Answer» Which of the following is the smallest in size?

8104.

Which of the following is the smallest in size?

Answer»

Which of the following is the smallest in size?

Discussion

8105.	8. Calculate the weight of NaOH & NaHCO3 whose 50ml each is completely neutralised by titrating it against 2 molar 10 ml HCL solution using HPh indicator and then titrating it against 1 molar 50 ml HCL solution using MeOH indicator. Also calculate their weight in 1 litre solution.
Answer» 8. Calculate the weight of NaOH & NaHCO3 whose 50ml each is completely neutralised by titrating it against 2 molar 10 ml HCL solution using HPh indicator and then titrating it against 1 molar 50 ml HCL solution using MeOH indicator. Also calculate their weight in 1 litre solution.

Discussion

8106.	41.49% (m/v) H2SO4 solution has d=1.84g/ml. It's molarity and molarity
Answer» 41.49% (m/v) H2SO4 solution has d=1.84g/ml. It's molarity and molarity

Discussion

8107.	Choose the option with correct dot structure.
Answer» Choose the option with correct dot structure.

Discussion

8108.	Out of ni/H2, pt/h2 , pd/H2, better reducing agent
Answer» Out of ni/H2, pt/h2 , pd/H2, better reducing agent

Discussion

8109.	The correct order of ionic radii for the ions, P3−,S2−,Ca2+,K+,Cl− is
Answer» The correct order of ionic radii for the ions, $P^{3 -}, S^{2 -}, C a^{2 +}, K^{+}, C l^{-}$ is

Discussion

8110.	What is surds
Answer» What is surds

Discussion

8111.	Identify the substance oxidized, substance reduced, oxidising agent and reducing agent. MnO2 + 4HCl → MnCl2 + 2H2O + Cl2.
Answer» Identify the substance oxidized, substance reduced, oxidising agent and reducing agent. $M n O_{2}$ + $4 H C l$ $\to$ $M n {C l}_{2}$ + $2 H_{2} O$ + ${C l}_{2}$ .

Discussion

8112.	What is the formulae of the compound: 1)potassium cyanide 2)magnesium cyanide
Answer» What is the formulae of the compound: 1)potassium cyanide 2)magnesium cyanide

8112.

What is the formulae of the compound: 1)potassium cyanide 2)magnesium cyanide

Answer»

What is the formulae of the compound:

1)potassium cyanide

2)magnesium cyanide

Discussion

8113.	A metaloxide has the formula Z2O3.It can be reduced by hydrogen to give free metal and water. 0.1596g of the metal oxide requires 6mg of hydrogen for complete reduction. The atomic weight of the metal is _
Answer» A metaloxide has the formula Z2O3.It can be reduced by hydrogen to give free metal and water. 0.1596g of the metal oxide requires 6mg of hydrogen for complete reduction. The atomic weight of the metal is _

Discussion

8114.	C3H7OH- This is the molecular formula for :
Answer» C₃H₇OH- This is the molecular formula for :

Discussion

8115.	State your observation for the following cases:(i) Ammonia gas is burnt in an atmosphere of oxygen in the absence of a catalyst.(ii) Glass rod dipped in ammonium hydroxide is brought near the mouth of the concentrated hydrochloric acid bottle.
Answer» State your observation for the following cases: (i) Ammonia gas is burnt in an atmosphere of oxygen in the absence of a catalyst. (ii) Glass rod dipped in ammonium hydroxide is brought near the mouth of the concentrated hydrochloric acid bottle.

Discussion

8116.	What type of reaction is white washing of walls using slaked lime?
Answer» What type of reaction is white washing of walls using slaked lime?

Discussion

8117.	Compounds such as alcohols and glucose also contain hydrogen but are not categorised as acids . Describe an activity to prove it...
Answer» Compounds such as alcohols and glucose also contain hydrogen but are not categorised as acids . Describe an activity to prove it...

Discussion

8118.	the radioactivity of a sample is R1 at time T1 and R2 at time T2 . if half life of specimen is T the number of atoms that have disintegrated in time T2 - T1 is proportional to ?
Answer» the radioactivity of a sample is R1 at time T1 and R2 at time T2 . if half life of specimen is T the number of atoms that have disintegrated in time T2 - T1 is proportional to ?

Discussion

8119.	Can you store lemon pickle in an aluminium utensil? Explain.
Answer» Can you store lemon pickle in an aluminium utensil? Explain.

Discussion

8120.	Sugar crystals obtained from sugarcane and sugar beet are mixed. Will it be a pure substance or a mixture? Give reasons for the same.
Answer» Sugar crystals obtained from sugarcane and sugar beet are mixed. Will it be a pure substance or a mixture? Give reasons for the same.

Discussion

8121.	What are the rules to write the chemical formulas? Give examples
Answer» What are the rules to write the chemical formulas? Give examples

Discussion

8122.	Which among the following compounds are responsible for the hardness of water?
Answer» Which among the following compounds are responsible for the hardness of water?

Discussion

8123.	If V is the volume of a nucleus, A is its mass number and ρ its density, then which of the following is a constant:
Answer» If $V$ is the volume of a nucleus, $A$ is its mass number and $ρ$ its density, then which of the following is a constant:

Discussion

8124.	31. 0.002mg of o2 in 1 litre water then whats is ppm of o2
Answer» 31. 0.002mg of o2 in 1 litre water then whats is ppm of o2

Discussion

8125.	Identify the compound which on reacting with sulphuric acid produces a gas that turns lime water milky.
Answer» Identify the compound which on reacting with sulphuric acid produces a gas that turns lime water milky.

Discussion

8126.	What is saponification?
Answer» What is saponification?

Discussion

8127.	Why does the colour of copper sulphate solution change when an iron nail is dipped in it?
Answer» Why does the colour of copper sulphate solution change when an iron nail is dipped in it?

Discussion

8128.	37. Which of the following compound gives trichloro methane on distillation with bleaching powder ?? 1. Methanal 2. Phenol 3. Ethanol 4. Methanol
Answer» 37. Which of the following compound gives trichloro methane on distillation with bleaching powder ?? 1. Methanal 2. Phenol 3. Ethanol 4. Methanol

Discussion

8129.	The graph of PV vs P at two temperatures T1 and T2 is shown below. What is the correct order about T1 and T2?
Answer» The graph of $P V$ vs $P$ at two temperatures $T_{1}$ and $T_{2}$ is shown below. What is the correct order about $T_{1}$ and $T_{2}$ ?

Discussion

8130.	Describe how sodium hydrogen carbonate (baking soda) is produced on a large scale. Write the equation of the reaction involved.
Answer» Describe how sodium hydrogen carbonate (baking soda) is produced on a large scale. Write the equation of the reaction involved.

Discussion

8131.	Which of the following is not isomeric with diethyl ether?
Answer» Which of the following is not isomeric with diethyl ether?

Discussion

8132.	Compute the formulae of the compound of silver and sulphur
Answer» Compute the formulae of the compound of silver and sulphur

Discussion

8133.	The number of molecules present in 200 g of N2O5 is __________.
Answer» The number of molecules present in 200 g of $N_{2} O_{5}$ is __________.

Discussion

8134.	Is coordinate bond equivalent to a double bond or to a single bond? which is to be considered while drawing Lewis structures and calculating formal charge?
Answer» Is coordinate bond equivalent to a double bond or to a single bond? which is to be considered while drawing Lewis structures and calculating formal charge?

Discussion

8135.	In a BCC unit cell, if half of the atoms per unit cellare removed, then percentage void is(2) 32%(1) 68%(4) 66%34%(3)
Answer» In a BCC unit cell, if half of the atoms per unit cellare removed, then percentage void is(2) 32%(1) 68%(4) 66%34%(3)

Discussion

8136.	How much ruppee can rohan spend per hrs that 1 mole of ruppe can last for 80 yrs?
Answer» How much ruppee can rohan spend per hrs that 1 mole of ruppe can last for 80 yrs?

Discussion

8137.	Soap in the form of micelles is used for cleaning. The micelles stay in the solution as a colloid and do not come together to precipitate because of:
Answer» Soap in the form of micelles is used for cleaning. The micelles stay in the solution as a colloid and do not come together to precipitate because of:

Discussion

8138.	The glory of Taj Mahal, the white wonder is under threat due to which of the following?
Answer» The glory of Taj Mahal, the white wonder is under threat due to which of the following?

Discussion

8139.	5. A gaseous reaction, A2(g) --------> B(g) + 1/2 C(g) shows increase in pressure from 100 mm to 120 mm in 5 minutes.The rate of disappearance of A2 is - 1. 4 mm/min 2. 8 mm/min 3. 16 mm/min 4. 2 mm/min
Answer» 5. A gaseous reaction, A2(g) --------> B(g) + 1/2 C(g) shows increase in pressure from 100 mm to 120 mm in 5 minutes.The rate of disappearance of A2 is - 1. 4 mm/min 2. 8 mm/min 3. 16 mm/min 4. 2 mm/min

Discussion

8140.	What is a substitution reaction? Give the reaction of chlorine with ethane and name the product formed.
Answer» What is a substitution reaction? Give the reaction of chlorine with ethane and name the product formed.

Discussion

8141.	How many electrons are transferred during following change? 2I-(aq) → I2 (s)
Answer» How many electrons are transferred during following change? 2I^-_(aq) → I₂ _(s)

Discussion

8142.	If element with principal quantum number n > 4were not allowed in nature, then the number ofpossible elements would be(1) 60(3) 4(2) 32(4) 64
Answer» If element with principal quantum number n > 4were not allowed in nature, then the number ofpossible elements would be(1) 60(3) 4(2) 32(4) 64

Discussion

8143.	46.Compare bond strength of the following- A)O2,F2,H2,N2 B)F-F,H-H,O-O,N-N,C-C
Answer» 46.Compare bond strength of the following- A)O2,F2,H2,N2 B)F-F,H-H,O-O,N-N,C-C

Discussion

8144.	Excess of which acid in the stomach causes 'acidity'? How can this be corrected?
Answer» Excess of which acid in the stomach causes 'acidity'? How can this be corrected?

Discussion

8145.	when equillibrium is achieved why moles of reactants and products are not same?
Answer» when equillibrium is achieved why moles of reactants and products are not same?

Discussion

8146.	How many sigma(σ) and pi(π) bonds are there in C_2 molecule?(with explanation) (1) 1σ,1π (2) 2σ,0π (3) 0σ,2π (4) 1σ,0π
Answer» How many sigma(σ) and pi(π) bonds are there in C_2 molecule?(with explanation) (1) 1σ,1π (2) 2σ,0π (3) 0σ,2π (4) 1σ,0π

Discussion

8147.	Why do we study carbon and it's compounds .why don't we study oxygen and it's compounds.
Answer» Why do we study carbon and it's compounds .why don't we study oxygen and it's compounds.

Discussion

8148.	In a CCP structure of compound XY, atom X is present at octahedral voids. The ratio of 6th C. N. and 3rd C.N. for an atom X located at body-centre is a) 1 b)1/3 c) 4 d) 1/4
Answer» In a CCP structure of compound XY, atom X is present at octahedral voids. The ratio of 6th C. N. and 3rd C.N. for an atom X located at body-centre is a) 1 b)1/3 c) 4 d) 1/4

Discussion

8149.	The materials of electric heating devices are usually made of: (A) Argon (B) Bronze (C) Nichrome (D) Tungsten
Answer» The materials of electric heating devices are usually made of: (A) Argon (B) Bronze (C) Nichrome (D) Tungsten

8149.

The materials of electric heating devices are usually made of: (A) Argon (B) Bronze (C) Nichrome (D) Tungsten

Answer»

The materials of electric heating devices are usually made of:

(A) Argon

(B) Bronze

(C) Nichrome

(D) Tungsten

Discussion

8150.	29. 1 mole of gas occupying 3 litre volume is expanded against a constant pressure of 1 atm to a volume of 15 litre. What is the work done by the system?
Answer» 29. 1 mole of gas occupying 3 litre volume is expanded against a constant pressure of 1 atm to a volume of 15 litre. What is the work done by the system?

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following is not a non-metal?

Can corrosion of metal be an advantage

In acidic medium, H2O2 changes Cr2O7^-2 to Cr2O5 which has two (-O-O-) bonds. Oxidation state of Cr in CrO5 is [AIPMT - 2014](1.) +5 (2.) +3(3.) +6 (4.) -10

Which of the following is the smallest in size?

8. Calculate the weight of NaOH & NaHCO3 whose 50ml each is completely neutralised by titrating it against 2 molar 10 ml HCL solution using HPh indicator and then titrating it against 1 molar 50 ml HCL solution using MeOH indicator. Also calculate their weight in 1 litre solution.

41.49% (m/v) H2SO4 solution has d=1.84g/ml. It's molarity and molarity

Choose the option with correct dot structure.

Out of ni/H2, pt/h2 , pd/H2, better reducing agent

The correct order of ionic radii for the ions, P3−,S2−,Ca2+,K+,Cl− is

What is surds

Identify the substance oxidized, substance reduced, oxidising agent and reducing agent. MnO2 + 4HCl → MnCl2 + 2H2O + Cl2.

What is the formulae of the compound: 1)potassium cyanide 2)magnesium cyanide

A metaloxide has the formula Z2O3.It can be reduced by hydrogen to give free metal and water. 0.1596g of the metal oxide requires 6mg of hydrogen for complete reduction. The atomic weight of the metal is _

C3H7OH- This is the molecular formula for :

State your observation for the following cases:(i) Ammonia gas is burnt in an atmosphere of oxygen in the absence of a catalyst.(ii) Glass rod dipped in ammonium hydroxide is brought near the mouth of the concentrated hydrochloric acid bottle.

What type of reaction is white washing of walls using slaked lime?

Compounds such as alcohols and glucose also contain hydrogen but are not categorised as acids . Describe an activity to prove it...

the radioactivity of a sample is R1 at time T1 and R2 at time T2 . if half life of specimen is T the number of atoms that have disintegrated in time T2 - T1 is proportional to ?

Can you store lemon pickle in an aluminium utensil? Explain.

Sugar crystals obtained from sugarcane and sugar beet are mixed. Will it be a pure substance or a mixture? Give reasons for the same.

What are the rules to write the chemical formulas? Give examples

Which among the following compounds are responsible for the hardness of water?

If V is the volume of a nucleus, A is its mass number and ρ its density, then which of the following is a constant:

31. 0.002mg of o2 in 1 litre water then whats is ppm of o2

Identify the compound which on reacting with sulphuric acid produces a gas that turns lime water milky.

What is saponification?

Why does the colour of copper sulphate solution change when an iron nail is dipped in it?

37. Which of the following compound gives trichloro methane on distillation with bleaching powder ?? 1. Methanal 2. Phenol 3. Ethanol 4. Methanol

The graph of PV vs P at two temperatures T1 and T2 is shown below. What is the correct order about T1 and T2?

Describe how sodium hydrogen carbonate (baking soda) is produced on a large scale. Write the equation of the reaction involved.

Which of the following is not isomeric with diethyl ether?

Compute the formulae of the compound of silver and sulphur

The number of molecules present in 200 g of N2O5 is __________.

Is coordinate bond equivalent to a double bond or to a single bond? which is to be considered while drawing Lewis structures and calculating formal charge?

In a BCC unit cell, if half of the atoms per unit cellare removed, then percentage void is(2) 32%(1) 68%(4) 66%34%(3)

How much ruppee can rohan spend per hrs that 1 mole of ruppe can last for 80 yrs?

Soap in the form of micelles is used for cleaning. The micelles stay in the solution as a colloid and do not come together to precipitate because of:

The glory of Taj Mahal, the white wonder is under threat due to which of the following?

5. A gaseous reaction, A2(g) --------> B(g) + 1/2 C(g) shows increase in pressure from 100 mm to 120 mm in 5 minutes.The rate of disappearance of A2 is - 1. 4 mm/min 2. 8 mm/min 3. 16 mm/min 4. 2 mm/min

What is a substitution reaction? Give the reaction of chlorine with ethane and name the product formed.

How many electrons are transferred during following change? 2I-(aq) → I2 (s)

If element with principal quantum number n > 4were not allowed in nature, then the number ofpossible elements would be(1) 60(3) 4(2) 32(4) 64

46.Compare bond strength of the following- A)O2,F2,H2,N2 B)F-F,H-H,O-O,N-N,C-C

Excess of which acid in the stomach causes 'acidity'? How can this be corrected?

when equillibrium is achieved why moles of reactants and products are not same?

How many sigma(σ) and pi(π) bonds are there in C_2 molecule?(with explanation) (1) 1σ,1π (2) 2σ,0π (3) 0σ,2π (4) 1σ,0π

Why do we study carbon and it's compounds .why don't we study oxygen and it's compounds.

In a CCP structure of compound XY, atom X is present at octahedral voids. The ratio of 6th C. N. and 3rd C.N. for an atom X located at body-centre is a) 1 b)1/3 c) 4 d) 1/4

The materials of electric heating devices are usually made of: (A) Argon (B) Bronze (C) Nichrome (D) Tungsten

29. 1 mole of gas occupying 3 litre volume is expanded against a constant pressure of 1 atm to a volume of 15 litre. What is the work done by the system?