InterviewSolution
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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.
| 1501. |
The minimum number of non coplanar vector whose sum can be zero is_________ |
| Answer» The minimum number of non coplanar vector whose sum can be zero is_________ | |
| 1502. |
what is amphteric oxides |
| Answer» what is amphteric oxides | |
| 1503. |
Differentiate among transparent, translucent, and opaque materials giving one example of each. |
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Answer» Differentiate among transparent, translucent, and opaque materials giving one example of each. |
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| 1504. |
अब तुम कहानी के लिए एक और नया शीर्षक सोचो। यह शीर्षक कहानी के किसी पात्र पर नहीं होना चाहिए। (कहानी की किसी घटना के बारे में शीर्षक हो सकता है।) |
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Answer» अब तुम कहानी के लिए एक और नया शीर्षक सोचो। यह शीर्षक कहानी के किसी पात्र पर नहीं होना चाहिए। (कहानी की किसी घटना के बारे में शीर्षक हो सकता है।) |
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| 1505. |
in an organic compound (containing C,H,N,O) ther is hydrogen 2.40%, oxygen 38.07% and nitrogen 16.67% and its molecular weight is 168 its molecular formula will be |
| Answer» in an organic compound (containing C,H,N,O) ther is hydrogen 2.40%, oxygen 38.07% and nitrogen 16.67% and its molecular weight is 168 its molecular formula will be | |
| 1506. |
Calculate the number of neutrons present in 4.5 grams of water. |
| Answer» Calculate the number of neutrons present in 4.5 grams of water. | |
| 1507. |
What is the first thing you should do if a fire breaks out in your home or neighbourhood ? |
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Answer» What is the first thing you should do if a fire breaks out in your home or neighbourhood ? |
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| 1508. |
What are the drawbacks and postulates of Rutherford atomic model ? |
| Answer» What are the drawbacks and postulates of Rutherford atomic model ? | |
| 1509. |
What is the difference between intramolecular redox reaction and decomposition reaction? |
| Answer» What is the difference between intramolecular redox reaction and decomposition reaction? | |
| 1510. |
Rusting of iron is a chemical change. |
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Answer» Rusting of iron is a |
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| 1511. |
Can chlorine replace oxygen during combustion? If yes then how does it happen? what is the work that chlorine or oxygen does during combustion? |
| Answer» Can chlorine replace oxygen during combustion? If yes then how does it happen? what is the work that chlorine or oxygen does during combustion? | |
| 1512. |
64. What will be the formula of Potassiumtetraiodomercurate (II) |
| Answer» 64. What will be the formula of Potassiumtetraiodomercurate (II) | |
| 1513. |
When X is added into blue coloured solution of Y. The blue colour of solution disappears and powdery red mass is deposited at the beaker. X and Y respectively are |
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Answer» When X is added into blue coloured solution of Y. The blue colour of solution disappears and powdery red mass is deposited at the beaker. X and Y respectively are |
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| 1514. |
Select the fuel that has high calorific value, burns readily and can be used as fuel in homes and automobiles. |
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Answer» Select the fuel that has high calorific value, burns readily and can be used as fuel in homes and automobiles. |
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| 1515. |
If there was no CO2 in the earth’s atmosphere, the temperature of the earth’s surface would be ______ |
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Answer» If there was no CO2 in the earth’s atmosphere, the temperature of the earth’s surface would be ______ |
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| 1516. |
Define interconversion of states of matter. What are the two factors responsible for the change of states of matter? |
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Answer» Define interconversion of states of matter. What are the two factors responsible for the change of states of matter? |
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| 1517. |
Which of the following salts does not contain water of crystallization?(a) Blue vitriol(b) Baking soda(c) Washing soda(d) Gypsum |
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Answer» Which of the following salts does not contain water of crystallization? |
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| 1518. |
Forest fire produces a lot of air pollution. Write in brief about the reasons for forest fires. |
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Answer» Forest fire produces a lot of air pollution. Write in brief about the reasons for forest fires. |
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| 1519. |
__ coke is light substance used in industrial furnaces. |
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Answer» |
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| 1520. |
The following table gives the steps we use in writing the formulae of compounds. What is the correct formula of Aluminium chloride? |
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Answer» The following table gives the steps we use in writing the formulae of compounds. What is the correct formula of Aluminium chloride? |
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| 1521. |
The following pictures relate to burning of ________ fuels. |
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Answer» The following pictures relate to burning of ________ fuels. |
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| 1522. |
sir what is BEC (Bose Einstien condensate) |
| Answer» sir what is BEC (Bose Einstien condensate) | |
| 1523. |
The element which is not an example of a metalloid is: |
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Answer» The element which is not an example of a metalloid is: |
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| 1524. |
An open U-tube contains Mercury. When 13.6 cm of water is poured into one of the arms of the tube, then the mercury rise in the other arm from it's initial level is? |
| Answer» An open U-tube contains Mercury. When 13.6 cm of water is poured into one of the arms of the tube, then the mercury rise in the other arm from it's initial level is? | |
| 1525. |
When an electrically charged particle is in motion it inevitably loses energy according to laws of mechanics and electrodynamics. In the case of atoms, electrons(charged particle) revolves(is in motion) around nucleus, why doesn't it lose energy and crash into nucleus? |
| Answer» When an electrically charged particle is in motion it inevitably loses energy according to laws of mechanics and electrodynamics. In the case of atoms, electrons(charged particle) revolves(is in motion) around nucleus, why doesn't it lose energy and crash into nucleus? | |
| 1526. |
Which of the following would most likely help to slow down the greenhouse effect? |
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Answer» Which of the following would most likely help to slow down the greenhouse effect? |
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| 1527. |
What is meant by transformation of energy |
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Answer» What is meant by transformation of energy |
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| 1528. |
Question 26Write the importance of synthetic polymers in our life. |
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Answer» Question 26 Write the importance of synthetic polymers in our life. |
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| 1529. |
Which is the strongest reducing agent among the following metals? |
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Answer» Which is the strongest reducing agent among the following metals? |
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| 1530. |
Draw a labelled diagram showing the process of distillation. |
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Answer» Draw a labelled diagram showing the process of distillation. |
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| 1531. |
Four set ups as given below were arranged to identify the gas evolved when dilute hydrochloric acid was added to zinc granules. The most appropriate set up is :(1) I(2) II(3) III(4) IV |
Answer» Four set ups as given below were arranged to identify the gas evolved when dilute hydrochloric acid was added to zinc granules. The most appropriate set up is : (1) I (2) II (3) III (4) IV |
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| 1532. |
Water is pure and fit for drinking when it is ___. |
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Answer» Water is pure and fit for drinking when it is |
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| 1533. |
Explain why, thermoplastics become soft on heating but thermosetting plastics do niot become soft on heating. Draw labelled diagrams to illustrate your answer. |
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Answer» Explain why, thermoplastics become soft on heating but thermosetting plastics do niot become soft on heating. Draw labelled diagrams to illustrate your answer. |
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| 1534. |
Write the molecular formulae for the oxides and sulphides of following elements present. (a) Sodium (b) Calcium (c) hydrogen |
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Answer» Write the molecular formulae for the oxides and sulphides of following elements present. (a) Sodium (b) Calcium (c) hydrogen |
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| 1535. |
Define one atomic mass unit. |
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Answer» Define one atomic mass unit. |
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| 1536. |
How many moles of hydrogen atoms are present in 1 mole of H2O? |
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Answer» How many moles of hydrogen atoms are present in 1 mole of H2O? |
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| 1537. |
If you are given two samples, how do you distinguish which one is metal and which is a nonmetal? |
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Answer» If you are given two samples, how do you distinguish which one is metal and which is a nonmetal? |
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| 1538. |
A 5000 kg rocket is set for vertical firing. The exhaust speed is 800ms^{-1} .to give an initial upward acceleration of 20 ms^{-2}, the amount of gas ejected per second to supply the needed thrust will be (g- 10 ms-2) -185.5kgs^{-1} -187.5kgs^-1 -127.5kgs^{-1} 137.5kgs^{-1 |
| Answer» A 5000 kg rocket is set for vertical firing. The exhaust speed is 800ms^{-1} .to give an initial upward acceleration of 20 ms^{-2}, the amount of gas ejected per second to supply the needed thrust will be (g- 10 ms-2) -185.5kgs^{-1} -187.5kgs^-1 -127.5kgs^{-1} 137.5kgs^{-1 | |
| 1539. |
Which of the following is a universal solvent? |
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Answer» Which of the following is a universal solvent? |
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| 1540. |
what is magnitude of displacement? |
| Answer» what is magnitude of displacement? | |
| 1541. |
What are the factors that affect rusting? [3 MARKS] |
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Answer» What are the factors that affect rusting? [3 MARKS] |
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| 1542. |
The Central Pollution Control Board (CPCB) was constituted under Act(a) Water (Prevention and Control of Pollution) Act, 1974(b) The Air (Prevention and Control of Pollution) Act, 1981 |
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Answer» The Central Pollution Control Board (CPCB) was constituted under (a) Water (Prevention and Control of Pollution) Act, 1974 (b) The Air (Prevention and Control of Pollution) Act, 1981 |
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| 1543. |
we know that anything burn in the presence of oxygen but why nothing can be burnt in water but water also made of oxygen molecule |
| Answer» we know that anything burn in the presence of oxygen but why nothing can be burnt in water but water also made of oxygen molecule | |
| 1544. |
Question 2The following reaction is an example of a4NH3(g)+5O2(g)→4NO(g)+6H2O(g)(i) Displacement reaction(ii) Combination reaction(iii) Redox reaction(iv) Neutralisation reaction(a) (i) and (iv)(b) (ii) and (iii)(c) (i) and (iii)(d) (iii) and (iv) |
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Answer» Question 2 The following reaction is an example of a 4NH3(g)+5O2(g)→4NO(g)+6H2O(g) (i) Displacement reaction |
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| 1545. |
Brass is a Homogeneous mixture . Does that mean we can get copper and zinc from brass using no chemical processes? Brass is Homogeneous because of the uniform compositions , like sugar solution. Just like how sugar and water can be separated can copper and zinc be too ? If not , even then why is it still and Homogeneous mixture? |
| Answer» Brass is a Homogeneous mixture . Does that mean we can get copper and zinc from brass using no chemical processes? Brass is Homogeneous because of the uniform compositions , like sugar solution. Just like how sugar and water can be separated can copper and zinc be too ? If not , even then why is it still and Homogeneous mixture? | |
| 1546. |
Which of the following options can be correctly associated with fuels? |
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Answer» Which of the following options can be correctly associated with fuels? |
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| 1547. |
How many electrons in an element with atomic number 28 have ( n+ l ) =4 ?68710 |
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Answer» How many electrons in an element with atomic number 28 have ( n+ l ) =4 ? 6 8 7 10 |
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| 1548. |
in derivation of law of conservation of energy ,why r we taking u to be 0 at point C? |
| Answer» in derivation of law of conservation of energy ,why r we taking u to be 0 at point C? | |
| 1549. |
Why are zinc granules used over zinc dust for the laboratory preparation of hydrogen gas? |
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Answer» Why are zinc granules used over zinc dust for the laboratory preparation of hydrogen gas? |
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| 1550. |
Define:(a) Elements(b) Compounds |
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Answer» Define: (a) Elements (b) Compounds |
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