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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.
| 1751. |
what is monoatomic and polyatomic? |
| Answer» what is monoatomic and polyatomic? | |
| 1752. |
Arrange water, sugar, oxygen in increasing order of forces of attraction between the particles and explain the same. |
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Answer» Arrange water, sugar, oxygen in increasing order of forces of attraction between the particles and explain the same. |
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| 1753. |
Is hydroboration oxidation a nucleophilic addition mechanism? If not what is its mechanism called as? |
| Answer» Is hydroboration oxidation a nucleophilic addition mechanism? If not what is its mechanism called as? | |
| 1754. |
How would you show that setting of curd is a chemical change? |
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Answer» How would you show that setting of curd is a chemical change? |
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| 1755. |
why is calcium and potassium not shown in the reaction of metals with dilute acids ? |
| Answer» why is calcium and potassium not shown in the reaction of metals with dilute acids ? | |
| 1756. |
On what principle is a fire extinguisher based on? |
| Answer» On what principle is a fire extinguisher based on? | |
| 1757. |
When carbon dioxide gas is passed through lime water, |
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Answer» When carbon dioxide gas is passed through lime water, |
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| 1758. |
Question 29Iron is more reactive than copper. Can you write an activity to show this? |
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Answer» Question 29 Iron is more reactive than copper. Can you write an activity to show this? |
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| 1759. |
21.The percentage of hydrogen in water and hydrogen peroxide is 11.1 and 5.9 respectively. This figure illustrate 1 law of multiple proportion. 2 law of conservation of mass 3 law of constant proportion. 4 law of combining volume |
| Answer» 21.The percentage of hydrogen in water and hydrogen peroxide is 11.1 and 5.9 respectively. This figure illustrate 1 law of multiple proportion. 2 law of conservation of mass 3 law of constant proportion. 4 law of combining volume | |
| 1760. |
How are the different components obtained from crude oil? |
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Answer» How are the different components obtained from crude oil? |
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| 1761. |
There are two charged bodies A and b having charges q1 and -q2 respectively. A line of force emanates from A at an angle X and terminate at an angle Y. Thee the ratio of q1 and -q2 is |
| Answer» There are two charged bodies A and b having charges q1 and -q2 respectively. A line of force emanates from A at an angle X and terminate at an angle Y. Thee the ratio of q1 and -q2 is | |
| 1762. |
Write the chemical name of the following and also give their molecular formulae :(a) Baking soda(b) Vinegar(c) Marble(d) Sand |
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Answer» Write the chemical name of the following and also give their molecular formulae : (a) Baking soda (b) Vinegar (c) Marble (d) Sand |
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| 1763. |
Hydrogen is used as a fuel in the form of: |
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Answer» Hydrogen is used as a fuel in the form of: |
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| 1764. |
Which of the following is NOT a feature of a physical change? |
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Answer» Which of the following is NOT a feature of a physical change? |
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| 1765. |
Why Bredig's arc method is not used to obtain colloidal solution of Na metal? |
| Answer» Why Bredig's arc method is not used to obtain colloidal solution of Na metal? | |
| 1766. |
4 BE of A-B = 6 per mole BE of A-A = 3 per mole BE of B-B = 1.3 per mole Electronegativity of A is 1.2. What is the electronegativity of B? 1) 2.4 2) 3.2 3) 1.62 4) 1.4 |
| Answer» 4 BE of A-B = 6 per mole BE of A-A = 3 per mole BE of B-B = 1.3 per mole Electronegativity of A is 1.2. What is the electronegativity of B? 1) 2.4 2) 3.2 3) 1.62 4) 1.4 | |
| 1767. |
which of the following is not an acidic medium? a.CuSO4 b.Na2CO3 c.ZnSO4 d.NH4NO |
| Answer» which of the following is not an acidic medium? a.CuSO4 b.Na2CO3 c.ZnSO4 d.NH4NO | |
| 1768. |
46 Calculate the volume of O2 and volume of air needed for combustion of 1kg carbon at STP. |
| Answer» 46 Calculate the volume of O2 and volume of air needed for combustion of 1kg carbon at STP. | |
| 1769. |
Why is it so hard to break a solid? |
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Answer» Why is it so hard to break a solid? |
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| 1770. |
Equal moles of hydrogen and oxygen are placed in a container with a pin hole through which both can escape.What fraction of oxygen escapes in the time required for one third of hydrogen to escape? |
| Answer» Equal moles of hydrogen and oxygen are placed in a container with a pin hole through which both can escape.What fraction of oxygen escapes in the time required for one third of hydrogen to escape? | |
| 1771. |
A copper article kept in a showcase looses its shine with time because of the formation of: |
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Answer» A copper article kept in a showcase looses its shine with time because of the formation of: |
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| 1772. |
Why sulphur dioxide is used for preservative gas? |
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Answer» Why sulphur dioxide is used for preservative gas? |
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| 1773. |
The best and latest technique for isolation, purification and separation of organic compounds is: (a) Crystallisation (b) Distillation (c) Sublimation (d) Chromatography |
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Answer» The best and latest technique for isolation, purification and separation of organic compounds is: |
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| 1774. |
Giveexamples to show that plastics are non-corrosivein nature. |
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Answer» Give |
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| 1775. |
For a zero-order reaction:2NH3(g)→N2(g) +3H2(g), the rate of reaction is 0.1 atm/s. Initially only NH3(g) was present at 3 atm and the reaction is performed at constant volume and temperature. The total pressure of gases after 10 s from the start of reaction will be |
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Answer» For a zero-order reaction:2NH3(g)→N2(g) +3H2(g), the rate of reaction is 0.1 atm/s. Initially only NH3(g) was present at 3 atm and the reaction is performed at constant volume and temperature. The total pressure of gases after 10 s from the start of reaction will be |
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| 1776. |
18.When 1000 l of oxygen is paassed through the ozoniser the volume of ozonised oxygen is 888l. The volume of ozone in ozonised oxygen is |
| Answer» 18.When 1000 l of oxygen is paassed through the ozoniser the volume of ozonised oxygen is 888l. The volume of ozone in ozonised oxygen is | |
| 1777. |
Which of the following is most covalent among the given four ionic solids? |
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Answer» Which of the following is most covalent among the given four ionic solids? |
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| 1778. |
In all the phenomena given below, liquids are getting converted to ______. |
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Answer» In all the phenomena given below, liquids are getting converted to ______. |
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| 1779. |
Which of these plastics can be softened by heating only once?(a) polythene(b) PVC(c) bakelite(d) polystyrene |
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Answer» Which of these plastics can be softened by heating only once? (a) polythene (b) PVC (c) bakelite (d) polystyrene |
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| 1780. |
In an experiment, 15 gm of a compound X is heated in a closed glass container to give compounds Y and Z. The total mass of the compounds Y and Z is ______. |
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Answer» In an experiment, 15 gm of a compound X is heated in a closed glass container to give compounds Y and Z. The total mass of the compounds Y and Z is ______. |
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| 1781. |
select odd one out mica glass distilled water graphite why? |
| Answer» select odd one out mica glass distilled water graphite why? | |
| 1782. |
The gases obtained on electrolysis of water are kept in two test tubes A and B. When an incense stick is brought near test tube A the gas burns with a pop sound. When an incense stick is brought near test tube B it burns more vigorously. What is the ratio of the volume of the gases when they are kept under the same conditions(the pressure and temperature in both the test tubes are the same)? |
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Answer» The gases obtained on electrolysis of water are kept in two test tubes A and B. When an incense stick is brought near test tube A the gas burns with a pop sound. When an incense stick is brought near test tube B it burns more vigorously. What is the ratio of the volume of the gases when they are kept under the same conditions(the pressure and temperature in both the test tubes are the same)? |
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| 1783. |
Question 6.4Balance the following chemical equation:BaCl2+H2SO4→BaSO4+HCl |
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Answer» Question 6.4 Balance the following chemical equation: BaCl2+H2SO4→BaSO4+HCl |
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| 1784. |
Which of the following is\are correct with respect to carbon monoxide?(i) It is released due to incomplete combustion of fuels.(ii) It does not affect humans.(iii) It is a poisonous gas.(iv) It reduces oxygen-carrying capacity of the blood.(v) It is sometimes released from vehicles. |
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Answer» Which of the following is\are correct with respect to carbon monoxide? (i) It is released due to incomplete combustion of fuels. (ii) It does not affect humans. (iii) It is a poisonous gas. (iv) It reduces oxygen-carrying capacity of the blood. (v) It is sometimes released from vehicles. |
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| 1785. |
37. As molecular size increases , what happens to solubility ? And why does it do so? |
| Answer» 37. As molecular size increases , what happens to solubility ? And why does it do so? | |
| 1786. |
Q. even though k=G x G\ast conductivity of solution doesn't depend on cell cons†an t G\ast how? |
| Answer» Q. even though k=G x G\ast conductivity of solution doesn't depend on cell cons†an t G\ast how? | |
| 1787. |
Classify the following substances into compounds and mixtures : Carbon dioxide, air, water, milk, common salt, blood, fruit juice, iron sulphide. |
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Answer» Classify the following substances into compounds and mixtures : Carbon dioxide, air, water, milk, common salt, blood, fruit juice, iron sulphide. |
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| 1788. |
Which of the following is an example of absorption in plants? |
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Answer» Which of the following is an example of absorption in plants? |
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| 1789. |
STATEMENT-1: It is necessary to define two molar heatcapacities for a gas.STATEMENT-2: Work is done by a gas when its volume changes |
| Answer» STATEMENT-1: It is necessary to define two molar heatcapacities for a gas.STATEMENT-2: Work is done by a gas when its volume changes | |
| 1790. |
correct order of acidic strength of co2, cuo, cao and h2o |
| Answer» correct order of acidic strength of co2, cuo, cao and h2o | |
| 1791. |
How to balance metals and non metals |
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Answer» How to balance metals and non metals |
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| 1792. |
Define the terms (a) Valency (b) Chemical formula |
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Answer» Define the terms (a) Valency (b) Chemical formula |
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| 1793. |
When zinc metal reacts with dilute sulphuric acid, a gas is evolved. Which one is a correct statement about the nature of this gas ?(1) colourless with suffocating odour(2) reddish brown and odourless(3) colourless and sweet smelling(4) colourless and odourless |
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Answer» When zinc metal reacts with dilute sulphuric acid, a gas is evolved. Which one is a correct statement about the nature of this gas ? (1) colourless with suffocating odour (2) reddish brown and odourless (3) colourless and sweet smelling (4) colourless and odourless |
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| 1794. |
The absolute zero is the temperature at which- |
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Answer» The absolute zero is the temperature at which- |
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| 1795. |
Which of the following are true regarding CO2?a. Excess of CO2 acts as a pollutantb. Plants take in CO2 for photosynthesisc. Deforestation leads to decrease in the amount of CO2 in aird. Less quantity of CO2 causes rise in temperature |
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Answer» Which of the following are true regarding CO2? |
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| 1796. |
a. How many elements are known to us at present?b. Write the symbols of the following elements Iron, Cobalt, Copper, Carbon, Calcium |
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Answer» a. How many elements are known to us at present? b. Write the symbols of the following elements Iron, Cobalt, Copper, Carbon, Calcium |
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| 1797. |
Which of the following has the same monomer unit? |
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Answer» Which of the following has the same monomer unit? |
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| 1798. |
Why is Sun burning even though there is no oxygen ??? |
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Answer» Why is Sun burning even though there is no oxygen ??? |
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| 1799. |
Which of the following is not an element of group 13? |
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Answer» Which of the following is not an element of group 13? |
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| 1800. |
What is the valency of SO2? |
| Answer» What is the valency of SO2? | |