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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 4751. |
an electron is a single hydrogen atom is excited to the 5th excited state. find the maximum number of spectral lines produced |
| Answer» an electron is a single hydrogen atom is excited to the 5th excited state. find the maximum number of spectral lines produced | |
| 4752. |
Why average atomic mass is divided by 100 as par it's name it should be average I.e sum of observation/total number of observations |
| Answer» Why average atomic mass is divided by 100 as par it's name it should be average I.e sum of observation/total number of observations | |
| 4753. |
A small quantity of gaseous NH3 and HBr are introduced simultaneously into the opposite ends if tube which us one metre long . Calculate the distance of white solid NH4Br formed from the end which was used to introfuce NH3. |
| Answer» A small quantity of gaseous NH3 and HBr are introduced simultaneously into the opposite ends if tube which us one metre long . Calculate the distance of white solid NH4Br formed from the end which was used to introfuce NH3. | |
| 4754. |
18. Which is most ionic compound of group-14 elements? 1)CCl4 2)SiCl4 3)PbCl2 4)PbCl4 |
| Answer» 18. Which is most ionic compound of group-14 elements? 1)CCl4 2)SiCl4 3)PbCl2 4)PbCl4 | |
| 4755. |
slope of a-t graph represent |
| Answer» slope of a-t graph represent | |
| 4756. |
Bond length of H-H is 0.64 and the bind length of F2 is 1.2. Electronegativities of H and F respectively are 2.1 and 4.1.What is the bond length of HF? 1)0.64 2)0.92 3)0.82 4)0.62 |
| Answer» Bond length of H-H is 0.64 and the bind length of F2 is 1.2. Electronegativities of H and F respectively are 2.1 and 4.1.What is the bond length of HF? 1)0.64 2)0.92 3)0.82 4)0.62 | |
| 4757. |
out of the following which one os jot possible energy for a photon to he emitted by hydrogen atom according to bohr atomic model (1)13.6 (2)0.65 (3) 1.9 (4) 11. |
| Answer» out of the following which one os jot possible energy for a photon to he emitted by hydrogen atom according to bohr atomic model (1)13.6 (2)0.65 (3) 1.9 (4) 11. | |
| 4758. |
'Water is universal solvent' . Comment. |
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Answer» 'Water is universal solvent' . Comment. |
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| 4759. |
The drain cleaner, drainex contains small bits of aluminium which react with caustic soda to produce dihydrogen.What volume of dihydrogen at 293K and 1 bar pressure will be released when 0.15 g of aluminium reacts? |
| Answer» The drain cleaner, drainex contains small bits of aluminium which react with caustic soda to produce dihydrogen.What volume of dihydrogen at 293K and 1 bar pressure will be released when 0.15 g of aluminium reacts? | |
| 4760. |
Which substance is reduced in the fiven reaction? ZnO + C → Zn + CO |
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Answer» Which substance is reduced in the fiven reaction? ZnO + C → Zn + CO |
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| 4761. |
32. Based on following information arrange four metals A,B,C,D in order of increasing ability to act as reducing agents a. only C react with 0.1M HCl to give hydrogen gas b. when A is added to solution of the other metal ions, metallic D is formed but not B or C 1. D |
| Answer» 32. Based on following information arrange four metals A,B,C,D in order of increasing ability to act as reducing agents a. only C react with 0.1M HCl to give hydrogen gas b. when A is added to solution of the other metal ions, metallic D is formed but not B or C 1. D | |
| 4762. |
What are the characteristics of matter? |
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Answer» What are the characteristics of matter? |
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| 4763. |
Tanx.tan4x=1 . Find x |
| Answer» Tanx.tan4x=1 . Find x | |
| 4764. |
Question 16 The percentage of solar radiation absorbed by all the green plants for the process of photosynthesis is about (a) 1 % (b) 5 % (c) 8 % (d) 10 % |
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Answer» Question 16 |
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| 4765. |
Electronic configuration is done according to 2n^2 or 2,8,8,18? |
| Answer» Electronic configuration is done according to 2n^2 or 2,8,8,18? | |
| 4766. |
Which of the following reactions is called slaking of lime? |
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Answer» Which of the following reactions is called slaking of lime? |
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| 4767. |
What is the atomicity of S8? |
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Answer» What is the atomicity of S8? |
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| 4768. |
124gm of P4 react with 192gm of O2 . Calculate mass of P4H10 obtained. |
| Answer» 124gm of P4 react with 192gm of O2 . Calculate mass of P4H10 obtained. | |
| 4769. |
what is full form of BEC? |
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Answer» what is full form of BEC? |
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| 4770. |
Burning of a candle is an example of: |
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Answer» Burning of a candle is an example of: |
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| 4771. |
What is the physical state of water at the given temperatures – (a) 25⁰C (b) 0⁰C (c) 100⁰C |
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Answer» What is the physical state of water at the given temperatures – (a) 25⁰C (b) 0⁰C (c) 100⁰C |
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| 4772. |
For which of the following elements the sequence of increasing atomic masses was inverted in Mendeleev’s periodic table? |
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Answer» For which of the following elements the sequence of increasing atomic masses was inverted in Mendeleev’s periodic table? |
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| 4773. |
With respect to graphite and diamond, How many statement(s) given below is/are correct1.Graphite is harder than diamond2.Graphite has higher electrical conductivity than diamond3.Graphite has higher thermal conductivity than diamond4.Graphite has higher C−C bond order than diamond |
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Answer» With respect to graphite and diamond, How many statement(s) given below is/are correct 1.Graphite is harder than diamond 2.Graphite has higher electrical conductivity than diamond 3.Graphite has higher thermal conductivity than diamond 4.Graphite has higher C−C bond order than diamond |
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| 4774. |
who discovered anode rays and who discovered proto |
| Answer» who discovered anode rays and who discovered proto | |
| 4775. |
A reaction follows the given concentration (M)-time graph. The rate for this reaction at 20 seconds will be |
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Answer» A reaction follows the given concentration (M)-time graph. The rate for this reaction at 20 seconds will be |
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| 4776. |
In bomb calorimeter, 3.5 g of carbon monoxide is burnt in excess of oxygen at 25C. The change in internal energy during the combustion of carbon monoxide will be(given: calorimeter shows a temperature increase to 0.45 C and heat capacity of calorimeter is 2.5Kj/mole. |
| Answer» In bomb calorimeter, 3.5 g of carbon monoxide is burnt in excess of oxygen at 25C. The change in internal energy during the combustion of carbon monoxide will be(given: calorimeter shows a temperature increase to 0.45 C and heat capacity of calorimeter is 2.5Kj/mole. | |
| 4777. |
The atomicity of the element argon is ______. |
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Answer» The atomicity of the element argon is ______. |
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| 4778. |
When is the nucleus said to be unstable? |
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Answer» When is the nucleus said to be unstable? |
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| 4779. |
If 50 ml of H2 and 30 ml of O2 react to form water vapour, then the final volume of the reaction mixture will be Options: a-50 mL b-55 mL c-80 mL d- 60 mL |
| Answer» If 50 ml of H2 and 30 ml of O2 react to form water vapour, then the final volume of the reaction mixture will be Options: a-50 mL b-55 mL c-80 mL d- 60 mL | |
| 4780. |
24.Calculate the osmotic pressure of solution containing 0.02 mol. of NaCl & 0.03 mol. of glucose in a 500 ml solution at 27^° C. |
| Answer» 24.Calculate the osmotic pressure of solution containing 0.02 mol. of NaCl & 0.03 mol. of glucose in a 500 ml solution at 27^° C. | |
| 4781. |
Q. 7 Given the value of rydberg constant is 10-7 m-1 ,the wave number of the last line of balmer series in hydrogen spectrum will be |
| Answer» Q. 7 Given the value of rydberg constant is 10-7 m-1 ,the wave number of the last line of balmer series in hydrogen spectrum will be | |
| 4782. |
What are bond pairs? Give some examples depicting bond pairs. |
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Answer» What are bond pairs? Give some examples depicting bond pairs. |
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| 4783. |
The radius of hydrogen atom in the ground state 0.53Å. The radius of 3Li2+ in the similar state is |
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Answer» The radius of hydrogen atom in the ground state 0.53Å. The radius of 3Li2+ in the similar state is |
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| 4784. |
Assertion : 22.4L of He gas is having Avogadro number of He at 1atm.and 273k Reason : 22.4L of any gas at 1atm and 273k is having Avogadro number atoms |
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Answer» Assertion : 22.4L of He gas is having Avogadro number of He at 1atm.and 273k Reason : 22.4L of any gas at 1atm and 273k is having Avogadro number atoms |
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| 4785. |
Is a ion stable? But in a ion the octet is complete like in Na+, then why does it react with others? |
| Answer» Is a ion stable? But in a ion the octet is complete like in Na+, then why does it react with others? | |
| 4786. |
Which scientist stated that the atomic mass of the middle element was roughly the average of the atomic masses of the other two elements? |
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Answer» Which scientist stated that the atomic mass of the middle element was roughly the average of the atomic masses of the other two elements? |
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| 4787. |
State the chemicals responsible for ozone layer destruction. |
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Answer» State the chemicals responsible for ozone layer destruction. |
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| 4788. |
Question 1.Write the basic difference in physical properties of the three states of matter. |
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Answer» Question 1. Write the basic difference in physical properties of the three states of matter. |
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| 4789. |
Question 4 (b) Write the chemical formulae of the following: (b) Calcium oxide |
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Answer» Question 4 (b) Write the chemical formulae of the following: (b) Calcium oxide |
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| 4790. |
Differentiate 1)fractional distillation and simple distillation 2)elements and compounds |
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Answer» Differentiate 1)fractional distillation and simple distillation 2)elements and compounds |
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| 4791. |
mole fraction of a solute in a 1.00 molal aqueous solution |
| Answer» mole fraction of a solute in a 1.00 molal aqueous solution | |
| 4792. |
what is mean free path ? and kinetic interpretation of temperature |
| Answer» what is mean free path ? and kinetic interpretation of temperature | |
| 4793. |
Q. Mole fraction of solute in aqueous solution of 30% NaOH is-1)0.162)0.053)0.254)0.95 |
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Answer» Q. Mole fraction of solute in aqueous solution of 30% NaOH is- 1)0.16 2)0.05 3)0.25 4)0.95 |
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| 4794. |
1 gram of ice is mixed with 1 gram of steam. At thermal equilibrium, the temperature of the mixture is |
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Answer» 1 gram of ice is mixed with 1 gram of steam. At thermal equilibrium, the temperature of the mixture is |
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| 4795. |
The formula to calculate the rate of the reaction in terms of concentration of reactants is |
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Answer» The formula to calculate the rate of the reaction in terms of concentration of reactants is |
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| 4796. |
Which one of the following sets of phenomena would increase on raising the temperature?(a) Diffusion, evaporation, compression of gases(b) Evaporation, compression of gases, solubility(c) Evaporation, diffusion, expansion of gases(d) Evaporation, solubility, diffusion, compression of gases |
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Answer» Which one of the following sets of phenomena would increase on raising the temperature? |
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| 4797. |
An element has atomic number 13 and atomic mass of 27.(i) How many electrons are there in each atom of the element?(ii) How are these electrons distributed in the various energy levels? |
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Answer» An element has atomic number 13 and atomic mass of 27. (i) How many electrons are there in each atom of the element? (ii) How are these electrons distributed in the various energy levels? |
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| 4798. |
What is the valency of Chlorine? |
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Answer» What is the valency of Chlorine?
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| 4799. |
white deposits can be seen in containers used for storing water explain why this deposits |
| Answer» white deposits can be seen in containers used for storing water explain why this deposits | |
| 4800. |
A ___ is an organic compound made of nothing more than carbon and hydrogen. |
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Answer» A |
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