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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.
| 401. |
Someproperties are listed in the following Table. Distinguish betweenmetals and non-metals on the basis of these properties. Properties Metals Non-metals 1. Appearance 2. Hardness 3. Malleability 4. Ductility 5. Heat Conduction 6. Conduction of Electricity |
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Answer» Some
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| 402. |
The process of obtaining large crystals of pure salt from seawater is known as ______. |
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Answer» The process of obtaining large crystals of pure salt from seawater is known as ______. |
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| 403. |
Question 2Hydrogen has been used as a rocket fuel. Would you consider it as a cleaner fuel than CNG? Why or why not? |
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Answer» Question 2 |
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| 404. |
128. Which one has same Van't Hoff factor} i as that of Hg2Cl2:} - (1) NaCl (3) Al(NO3)3 (2) Na2SO4(4) Al,(SO4)3 |
| Answer» 128. Which one has same Van't Hoff factor} i as that of Hg2Cl2:} - (1) NaCl (3) Al(NO3)3 (2) Na2SO4(4) Al,(SO4)3 | |
| 405. |
Two mettalic oxides contain 27.6% and 30% oxygen respectively if the formula of the first oxide is X3O4 that of the second will be? |
| Answer» Two mettalic oxides contain 27.6% and 30% oxygen respectively if the formula of the first oxide is X3O4 that of the second will be? | |
| 406. |
40. What is atom and describe structure of atom? What is matter? |
| Answer» 40. What is atom and describe structure of atom? What is matter? | |
| 407. |
Rate of evaporation increases with: |
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Answer» Rate of evaporation increases with: |
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| 408. |
Question 1Define the atomic mass unit. |
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Answer» Question 1 Define the atomic mass unit. |
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| 409. |
Is atomic mass the sum of the number or mass of protons and neutrons. If it is sum of number , then why is it called atomic MASS And if it is sum of mass then how do we know the no of neutrons and proton sin the atom. |
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Answer» Is atomic mass the sum of the number or mass of protons and neutrons. If it is sum of number , then why is it called atomic MASS And if it is sum of mass then how do we know the no of neutrons and proton sin the atom. |
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| 410. |
Identify the total number of substances that are malleable from the list given below:Iron, copper, oxygen, gold, sulphur3 |
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Answer» Identify the total number of substances that are malleable from the list given below: Iron, copper, oxygen, gold, sulphur
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| 411. |
what is ionic bond |
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Answer» what is ionic bond |
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| 412. |
Which of the following is correct regarding the chemical symbol of an element? |
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Answer» Which of the following is correct regarding the chemical symbol of an element? |
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| 413. |
At room temperature, H2O exists as ___. |
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Answer» At room temperature, H2O exists as |
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| 414. |
2.Actuall process of interconversion of state of matter |
| Answer» 2.Actuall process of interconversion of state of matter | |
| 415. |
What does the image depict? |
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Answer» What does the image depict?
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| 416. |
Zinc sulphate forms a colourless solution in water. Will you observe any colour change on adding copper turning in it? |
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Answer» Zinc sulphate forms a colourless solution in water. Will you observe any colour change on adding copper turning in it? |
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| 417. |
What are the rules for writing a chemical formula? |
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Answer» What are the rules for writing a chemical formula? |
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| 418. |
7. For the reaction PCl3+Cl2=PCl5 at 523K ,the value of Kc is 26,then value of Kp at same temp. will be?? |
| Answer» 7. For the reaction PCl3+Cl2=PCl5 at 523K ,the value of Kc is 26,then value of Kp at same temp. will be?? | |
| 419. |
What do you mean by a precipitation reaction? Explain by giving examples. |
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Answer» What do you mean by a precipitation reaction? Explain by giving examples. |
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| 420. |
What is reactivity series? how to learn it |
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Answer» What is reactivity series? how to learn it |
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| 421. |
can the same reaction be part of two types of reaction?eg- redox reaction as well as combination reaction |
| Answer» can the same reaction be part of two types of reaction?eg- redox reaction as well as combination reaction | |
| 422. |
A water sample contains magnesium bicarbonates. It does not lather with soap. How can we make the water sample useful for cleaning clothes? |
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Answer» A water sample contains magnesium bicarbonates. It does not lather with soap. How can we make the water sample useful for cleaning clothes? |
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| 423. |
The volume of a given mass of a gas is reduced to 1/4th of its initial value at constant temperature.Calculate percentage change in the pressure of the gas |
| Answer» The volume of a given mass of a gas is reduced to 1/4th of its initial value at constant temperature.Calculate percentage change in the pressure of the gas | |
| 424. |
What are lattices,kernels and electron clouds?How these tend to affect the malleable and ductile nature of metals? |
| Answer» What are lattices,kernels and electron clouds?How these tend to affect the malleable and ductile nature of metals? | |
| 425. |
What is the first rare earth metal? |
| Answer» What is the first rare earth metal? | |
| 426. |
13.How to calculate atomic radii of any atom like fluorine and neon |
| Answer» 13.How to calculate atomic radii of any atom like fluorine and neon | |
| 427. |
We know that valency of Na^+ is +1But, electronic configuration of Na+ is 2,8Valency of oxygen is -2 because it's configuration is 2,6 Then why is the valency of Na+, +1 |
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Answer» We know that valency of Na^+ is +1 But, electronic configuration of Na+ is 2,8 Valency of oxygen is -2 because it's configuration is 2,6 Then why is the valency of Na+, +1 |
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| 428. |
Which of the following groups contain only biodegradable items? |
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Answer» Which of the following groups contain only biodegradable items? |
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| 429. |
Why are the chemical properties of isotopes same but not the physical properties? |
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Answer» Why are the chemical properties of isotopes same but not the physical properties? |
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| 430. |
Which among the following is correctly represented? |
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Answer» Which among the following is correctly represented? |
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| 431. |
why is manufacture of ammmonia considered as a chemical change even when it is reversible |
| Answer» why is manufacture of ammmonia considered as a chemical change even when it is reversible | |
| 432. |
Which among the following statement is correct regarding clean water? |
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Answer» Which among the following statement is correct regarding clean water? |
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| 433. |
How can a supersaturated solution be prepared from a saturated solution formed at room temperature? |
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Answer» How can a supersaturated solution be prepared from a saturated solution formed at room temperature? |
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| 434. |
When the sub atomic particles were descoverd |
| Answer» When the sub atomic particles were descoverd | |
| 435. |
is there any use of petroleum in:- The Vaseline pure skin jelly |
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Answer» is there any use of petroleum in:- The Vaseline pure skin jelly |
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| 436. |
Name the products obtained and their uses when coal is processed in industry. |
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Answer» Name the products obtained and their uses when coal is processed in industry. |
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| 437. |
4Fe + 3O2 → 2Fe2O3 Iron Oxygen Ferric oxide The above reaction takes place in the presence of _________ . |
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Answer» 4Fe + 3O2 → 2Fe2O3 Iron Oxygen Ferric oxide The above reaction takes place in the presence of _________ . |
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| 438. |
Give an explanatory diagram of candle flame. [3 MARKS] |
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Answer» Give an explanatory diagram of candle flame. [3 MARKS] |
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| 439. |
Explain why O2+ has higher bond order than O2. |
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Answer» Explain why O2+ has higher bond order than O2. |
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| 440. |
Correct order of solubility of oxalates of alkaline earth metals is? |
| Answer» Correct order of solubility of oxalates of alkaline earth metals is? | |
| 441. |
Explain how, anufacturing of synthetic fibres is actually helping in the conservation of forests. |
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Answer» Explain how, anufacturing of synthetic fibres is actually helping in the conservation of forests. |
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| 442. |
The size of solute should be __________ for better solubility. |
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Answer» The size of solute should be __________ for better solubility. |
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| 443. |
Select the postulates of kinetic theory of matter: |
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Answer» Select the postulates of kinetic theory of matter: |
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| 444. |
WHY v=u+at can't be deduced using dimensional analysis? |
| Answer» WHY v=u+at can't be deduced using dimensional analysis? | |
| 445. |
Question 1 What are reactants? Why should magnesium ribbon be cleaned before burning? What is a balanced chemical equation? |
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Answer» Question 1
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| 446. |
Element X reacts readily with the oxygen of the air to give a compound Y which dissolves in water. The aqueous solution of Y changes blue litmus solution to red. The element X is : |
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Answer» Element X reacts readily with the oxygen of the air to give a compound Y which dissolves in water. The aqueous solution of Y changes blue litmus solution to red. The element X is : |
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| 447. |
why a mixture of two immiscible liquids at a cons†an t pressure of 1 atm boils at a temperature smaller than normal boiling points of either of them?? |
| Answer» why a mixture of two immiscible liquids at a cons†an t pressure of 1 atm boils at a temperature smaller than normal boiling points of either of them?? | |
| 448. |
Metal oxides which react with both acids as well as bases to produce salt and water are known as ___. |
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Answer» Metal oxides which react with both acids as well as bases to produce salt and water are known as |
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| 449. |
Which of the following is used for water purification? |
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Answer» Which of the following is used for water purification? |
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| 450. |
one liter of co2 is passed through red hot coke. the volume becomes 1. 4 liter at same temperature and pressure. the composition of product is what?? |
| Answer» one liter of co2 is passed through red hot coke. the volume becomes 1. 4 liter at same temperature and pressure. the composition of product is what?? | |
