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.
| 301. |
What do you mean by ginning of cotton? How is it done? [2 MARKS] |
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Answer» What do you mean by ginning of cotton? How is it done? [2 MARKS] |
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| 302. |
Select the option where filtration technique is used for separating the substances from each other. |
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Answer» Select the option where filtration technique is used for separating the substances from each other. |
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| 303. |
if an ice cube is completely immersed in water then what will happen to the level of water of ice melts ? |
| Answer» if an ice cube is completely immersed in water then what will happen to the level of water of ice melts ? | |
| 304. |
6. A carnot engine operates between 27 ^° c and 127^° c . The amount of useful work it does when it receives heat of 1200 cal is ? |
| Answer» 6. A carnot engine operates between 27 ^° c and 127^° c . The amount of useful work it does when it receives heat of 1200 cal is ? | |
| 305. |
Which of the following is true about damped vibrations? |
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Answer» Which of the following is true about damped vibrations? |
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| 306. |
The pictures show different types of same substance. Identify the substance. |
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Answer» The pictures show different types of same substance. Identify the substance. |
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| 307. |
Which of the following phenomenon can transform matter from one state to another? |
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Answer» Which of the following phenomenon can transform matter from one state to another? |
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| 308. |
To use a sieve to separate sand and rice seeds, what should be the size of the holes of the sieve in comparison to the size of sand particles and rice seeds? |
| Answer» To use a sieve to separate sand and rice seeds, what should be the size of the holes of the sieve in comparison to the size of sand particles and rice seeds? | |
| 309. |
During summer holidays, a group of children collected a lump of salt, green grass, broken glass piece, a small thermocol box, pen, iron nail, glass marbles, hair, naphthalene ball, a piece of sugar candy (mishri) and tried to group them on the basis of properties given in table below. Help them in filling the Table. Name of the material Appearance (Hard/soft) Transparency (Transparent/Translucent/ Opaque) Floats/ Sinks in water Soluble/ Insoluble in water |
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Answer» During summer holidays, a group of children collected a lump of salt, green grass, broken glass piece, a small thermocol box, pen, iron nail, glass marbles, hair, naphthalene ball, a piece of sugar candy (mishri) and tried to group them on the basis of properties given in table below. Help them in filling the Table.
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| 310. |
Which of the following properties of a mixture are different for different components? |
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Answer» Which of the following properties of a mixture are different for different components? |
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| 311. |
Fill in the blanks: (a) The living elements of the environment are called the …………….. factors. (b) The non-living factors of the environment are also called the ………….. factors. |
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Answer» Fill in the blanks: (a) The living elements of the environment are called the …………….. factors. (b) The non-living factors of the environment are also called the ………….. factors. |
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| 312. |
1 gm of a mixture of CaCO_3 and MgCO_3 gave on ignition 240 ml of CO_2 at STP. What is the percentage composition of the mixture? (1) % CaCO_3=63.25 (2) % MgCO_3=75.21 (3) % CaCO_3=36.75 (4) % MgCO_3=36.75 |
| Answer» 1 gm of a mixture of CaCO_3 and MgCO_3 gave on ignition 240 ml of CO_2 at STP. What is the percentage composition of the mixture? (1) % CaCO_3=63.25 (2) % MgCO_3=75.21 (3) % CaCO_3=36.75 (4) % MgCO_3=36.75 | |
| 313. |
Satyendra Bose had doubts in his mind that, "are changes helpful in life?”. To answer his question, Aristotle asked him to do an activity. He asked the student to classify following changes into helpful and non-helpful from their perspective. (NA denotes NotApplicable) 1. Farmers harvesting crop 2. Ripening of Fruits 3. Rancidity of food |
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Answer» Satyendra Bose had doubts in his mind that, "are changes helpful in life?”. To answer his question, Aristotle asked him to do an activity. He asked the student to classify following changes into helpful and non-helpful from their perspective. (NA denotes NotApplicable) 1. Farmers harvesting crop 2. Ripening of Fruits 3. Rancidity of food
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| 314. |
___ is the process of separating the clear liquid above after sedimentation of the components of a mixture. |
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Answer» |
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| 315. |
Why the air is transparent? |
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Answer» Why the air is transparent? |
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| 316. |
77 When 800g of a 20% solution by weight was cooled, 100 g of a solute precipitated. The percentage concentration of the remaining solution is A 8.57% B 15% C 12.25% D 9.5% |
| Answer» 77 When 800g of a 20% solution by weight was cooled, 100 g of a solute precipitated. The percentage concentration of the remaining solution is A 8.57% B 15% C 12.25% D 9.5% | |
| 317. |
Why are solid tightly packed |
| Answer» Why are solid tightly packed | |
| 318. |
The process by which a solid directly gets converted into its vapour state is called___ . |
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Answer» The process by which a solid directly gets converted into its vapour state is called |
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| 319. |
A block of wood was placed in the path of light. It completely blocked the light to form a shadow. This is because wood block is ____. |
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Answer» A block of wood was placed in the path of light. It completely blocked the light to form a shadow. This is because wood block is ____. |
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| 320. |
State the reasons for drying and pollution of Gadisar lake. |
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Answer» State the reasons for drying and pollution of Gadisar lake. |
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| 321. |
What do you mean by light? |
| Answer» What do you mean by light? | |
| 322. |
The substance which is made by mixing two elements without being chemically combined is called a ___ |
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Answer» The substance which is made by mixing two elements without being chemically combined is called a |
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| 323. |
How can we show that air is dissolved in water ? |
| Answer» How can we show that air is dissolved in water ? | |
| 324. |
Identify yarn from the given images. |
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Answer» Identify yarn from the given images. |
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| 325. |
Discuss the importance of roughage in our diet. |
| Answer» Discuss the importance of roughage in our diet. | |
| 326. |
Question 5 (c)Give the names of the elements present in the following compounds:(c) Baking powder |
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Answer» Question 5 (c) Give the names of the elements present in the following compounds: (c) Baking powder |
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| 327. |
Define density. How is it related to floating and sinking in water? |
| Answer» Define density. How is it related to floating and sinking in water? | |
| 328. |
10. In a certain sample of gas at 25^° C, the number ofmolecules having speeds between 4 km sec1 and4.1 km sec-1 is N. If the total number of gasmolecules at the same temperature are doubled,lhen(1) Value of most probable velocity will change(2) Area under Maxwell's curve for distribution ofspeeds will increase by four times(3) Number of molecules between 4 km sec and4.1 km sec-1 will become 2 N(4) Number of molecules between 4 km sec and4.1 km sec-1 will remain same |
| Answer» 10. In a certain sample of gas at 25^° C, the number ofmolecules having speeds between 4 km sec1 and4.1 km sec-1 is N. If the total number of gasmolecules at the same temperature are doubled,lhen(1) Value of most probable velocity will change(2) Area under Maxwell's curve for distribution ofspeeds will increase by four times(3) Number of molecules between 4 km sec and4.1 km sec-1 will become 2 N(4) Number of molecules between 4 km sec and4.1 km sec-1 will remain same | |
| 329. |
Explain the technique behind rooftop rainwater harvesting. [5 MARKS] |
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Answer» Explain the technique behind rooftop rainwater harvesting. [5 MARKS] |
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| 330. |
What is r selection and k selection |
| Answer» What is r selection and k selection | |
| 331. |
what is meissneris effect? |
| Answer» what is meissneris effect? | |
| 332. |
Can we say that loading is the advanced process of sedimentation |
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Answer» Can we say that loading is the advanced process of sedimentation |
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| 333. |
Explain the technique used for the process of rooftop rainwater harvesting. |
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Answer» Explain the technique used for the process of rooftop rainwater harvesting. |
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| 334. |
Is dissolving sugar in water a physical change or a chemical change? |
| Answer» Is dissolving sugar in water a physical change or a chemical change? | |
| 335. |
Maximum interparticle motion is present in |
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Answer» Maximum interparticle motion is present in |
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| 336. |
What are natural fibres? [1 MARK] |
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Answer» What are natural fibres? [1 MARK] |
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| 337. |
A Diamond can be said as Solid non- metal or not? |
| Answer» A Diamond can be said as Solid non- metal or not? | |
| 338. |
∫ e^(ax+b) dx = |
| Answer» ∫ e^(ax+b) dx = | |
| 339. |
Which one of the following best describes liquid? |
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Answer» Which one of the following best describes liquid? |
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| 340. |
How to find the n-factor of any molecule and compound |
| Answer» How to find the n-factor of any molecule and compound | |
| 341. |
18. If Δ H(fusion) of a solid is 550kJ/mole & Δ S(fusion) is 1000J/K, then the melting point of the solid will be 1) 450K 2) 400K 3) 550^° C 4) 500K |
| Answer» 18. If Δ H(fusion) of a solid is 550kJ/mole & Δ S(fusion) is 1000J/K, then the melting point of the solid will be 1) 450K 2) 400K 3) 550^° C 4) 500K | |
| 342. |
Question 7 Iron rim is made slightly smaller than the wooden wheel. The rim is usually heated before fixing into the wooden wheel because on heating the iron rim (a) expands and fits onto the wooden wheel (b) contracts and fits onto the wooden wheel (c) no change in the size take place (d) expands first, then on cooling contracts and fits onto the wooden wheel |
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Answer» Question 7 Iron rim is made slightly smaller than the wooden wheel. The rim is usually heated before fixing into the wooden wheel because on heating the iron rim |
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| 343. |
33.The area of blade of windmill is 'A' if the air blow perpendicular to blade and density of air is 'rho' . The mechanical strength obtained by windmill is - |
| Answer» 33.The area of blade of windmill is 'A' if the air blow perpendicular to blade and density of air is 'rho' . The mechanical strength obtained by windmill is - | |
| 344. |
Question 3(a) What are insoluble substances?(b) Name a few solid substances that are insoluble in water.(c) Name a few liquid substances that are insoluble in water. |
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Answer» Question 3 (a) What are insoluble substances? (b) Name a few solid substances that are insoluble in water. (c) Name a few liquid substances that are insoluble in water. |
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| 345. |
If there are two metallic balls one of them is very very very much cold & if we made close touch to both of them then will the cold metallic body tries to come in equillibrium when touched by another metallic body? |
| Answer» If there are two metallic balls one of them is very very very much cold & if we made close touch to both of them then will the cold metallic body tries to come in equillibrium when touched by another metallic body? | |
| 346. |
Define the following processes (a) Condensation (b) Evaporation (c) Transpiration |
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Answer» Define the following processes (a) Condensation (b) Evaporation (c) Transpiration |
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| 347. |
Select the statement(s) that refer to chromatography. |
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Answer» Select the statement(s) that refer to chromatography. |
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| 348. |
Where did Tara go one day? What did the old woman give Tara? What did the magic pot cook? Who said, "Do not cook Pot"? Why was there so much porridge on the road? |
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| 349. |
Garima observed when she left her tightly capped bottle full of water in the open sunlight, tiny bubbles were formed all around inside the bottle. Help Garima to know why it so happened? |
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Answer» Garima observed when she left her tightly capped bottle full of water in the open sunlight, tiny bubbles were formed all around inside the bottle. Help Garima to know why it so happened? |
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| 350. |
Match Column I with Column II column - I Column - II 1 Solid form of water A Groundwater 2 Wastage of water B Bawri 3 Water management C Snow 4 Small water D Drip irrigation 5 Water table E Leaking taps |
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Answer» Match Column I with Column II
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