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.
| 251. |
44.How to calculate thepacking efficiency of diamond? |
| Answer» 44.How to calculate thepacking efficiency of diamond? | |
| 252. |
In a solution, the substance in which another substance is dissolved is called: |
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Answer» In a solution, the substance in which another substance is dissolved is called: |
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| 253. |
Match the following: Column A Type of Change Landslides during the rainy season Periodic change Ironing of clothes Chemical change Bursting of a balloon Physical change Rotation of earth on its axis Reversible change Curdling of milk Non-periodic change Cutting of an apple Irreversible change |
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Answer» Match the following:
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| 254. |
Arrange the following substances in the increasing order of hardness.Sponge, brick, iron rod, diamond |
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Answer» Arrange the following substances in the increasing order of hardness. Sponge, brick, iron rod, diamond |
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| 255. |
State the law of conservation of energy. |
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Answer» State the law of conservation of energy. |
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| 256. |
A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shines brightly. Do you think the changes, which have occurred in the cement, could be reversed? |
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Answer» A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shines brightly. Do you think the changes, which have occurred in the cement, could be reversed? |
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| 257. |
What is the octet rule? How many electrons are present in the outermost shell of Neon? |
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Answer» What is the octet rule? How many electrons are present in the outermost shell of Neon? |
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| 258. |
Question 4: Name five changes you notice in your surroundings. Classify them as natural or man-made changes. |
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Answer» Question 4: Name five changes you notice in your surroundings. Classify them as natural or man-made changes. |
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| 259. |
CH4 C2H2 C2H6 is entalpy of combustion _890 _1411 _1560 kj /mol so which kalory value is lo |
| Answer» CH4 C2H2 C2H6 is entalpy of combustion _890 _1411 _1560 kj /mol so which kalory value is lo | |
| 260. |
Question 4Materials which can be drawn into wires are called ductile. Which of the following is not a ductile material?(a) silver(b) copper(c) sulphur(d) aluminium |
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Answer» Question 4 Materials which can be drawn into wires are called ductile. Which of the following is not a ductile material? (a) silver (b) copper (c) sulphur (d) aluminium |
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| 261. |
What is distillation ? |
| Answer» What is distillation ? | |
| 262. |
Choose the correct alternative to complete the given analogy. Physical change : Boiling : : Chemical change: _________. |
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Answer» Choose the correct alternative to complete the given analogy. Physical change : Boiling : : Chemical change: _________. |
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| 263. |
State whether the statements given below are True or False.(a) Stone is transparent, while glass is opaque.(b) A notebook has lustre while eraser does not.(c) Chalk dissolves in water.(d) A piece of wood floats on water.(e) Sugar does not dissolve in water.(f) Oil mixes with water.(g) Sand settles down in water.(h) Vinegar dissolves in water. |
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Answer» State whether the statements given below are True or False. (a) Stone is transparent, while glass is opaque. (b) A notebook has lustre while eraser does not. (c) Chalk dissolves in water. (d) A piece of wood floats on water. (e) Sugar does not dissolve in water. (f) Oil mixes with water. (g) Sand settles down in water. (h) Vinegar dissolves in water. |
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| 264. |
A chemical change is: |
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Answer» A chemical change is: |
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| 265. |
Explain with the help of a diagram how can a mixture of oil and water be separated. |
| Answer» Explain with the help of a diagram how can a mixture of oil and water be separated. | |
| 266. |
Dietary fibres are also known as __. |
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Answer» Dietary fibres are also known as __. |
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| 267. |
Why do we wear dark coloured clothes in winter? Why do we wear light coloured clothes in summer? How do woollen clothes keep us warm during winter? [3 MARKS] |
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Answer» Why do we wear dark coloured clothes in winter? Why do we wear light coloured clothes in summer? How do woollen clothes keep us warm during winter? [3 MARKS] |
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| 268. |
A drawing sheet changes when you draw a picture on it. Can you reverse this change? |
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Answer» A drawing sheet changes when you draw a picture on it. Can you reverse this change? |
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| 269. |
Which method will you use to get a pure liquid from a solution containing several soluble solids in the liquid? |
| Answer» Which method will you use to get a pure liquid from a solution containing several soluble solids in the liquid? | |
| 270. |
Which of the following is an example of a reversible change? |
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Answer» Which of the following is an example of a reversible change? |
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| 271. |
The process of separating grain seeds from the chaff is called: |
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Answer» The process of separating grain seeds from the chaff is called: |
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| 272. |
Do allotropes exhibit same chemical properties? |
| Answer» Do allotropes exhibit same chemical properties? | |
| 273. |
Write the order Acidic strength of group 16 oxides. |
| Answer» Write the order Acidic strength of group 16 oxides. | |
| 274. |
Name one fibre each that is:(a) smooth(b) shiny(c) fluffy(d) wrinkle free |
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Answer» Name one fibre each that is: (a) smooth (b) shiny (c) fluffy (d) wrinkle free |
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| 275. |
Which gas is used for extinguishing flames? How does it work? [3 MARKS] |
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Answer» Which gas is used for extinguishing flames? How does it work? [3 MARKS] |
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| 276. |
a 5M solution of h2s04 is diluted from 1 litre to a 100 litre the normality of solution will b |
| Answer» a 5M solution of h2s04 is diluted from 1 litre to a 100 litre the normality of solution will b | |
| 277. |
The liquid obtained after filtration is called: |
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Answer» The liquid obtained after filtration is called: |
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| 278. |
How will you separate a mixture of grass, pebbles and sand? |
| Answer» How will you separate a mixture of grass, pebbles and sand? | |
| 279. |
The dissolving of sugar in water is a _________ change. |
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Answer» The dissolving of sugar in water is a _________ change. |
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| 280. |
What is a saturated solution? Explain with an example. [2 MARKS] |
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Answer» What is a saturated solution? Explain with an example. [2 MARKS] |
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| 281. |
Write two uses of Plaster of Paris. |
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Answer» Write two uses of Plaster of Paris. |
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| 282. |
Question 2Name the different processes involved in the water cycle. |
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Answer» Question 2 Name the different processes involved in the water cycle. |
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| 283. |
Draw a labelled diagram of the apparatus used to distil out pure water from a solution. |
| Answer» Draw a labelled diagram of the apparatus used to distil out pure water from a solution. | |
| 284. |
What type of change is observed in figure shown below: |
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Answer» What type of change is observed in figure shown below:
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| 285. |
Can you think of the advantages of writing on a hard surface. And what could have been the difficulties. |
| Answer» Can you think of the advantages of writing on a hard surface. And what could have been the difficulties. | |
| 286. |
When hydrogen combine with oxygen what it is form ? Water pr anythink else |
| Answer» When hydrogen combine with oxygen what it is form ? Water pr anythink else | |
| 287. |
What are the advantages of using CNG and LPG as fuels? |
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Answer» What are the advantages of using CNG and LPG as fuels? |
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| 288. |
Select the opaque object. |
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Answer» Select the opaque object. |
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| 289. |
what is the ratio of Fe2+ and Fe3+ in Fe0.94S1 |
| Answer» what is the ratio of Fe2+ and Fe3+ in Fe0.94S1 | |
| 290. |
The physical state of gallium is ___ at 30∘ C. |
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Answer» The physical state of gallium is ___ at 30∘ C. |
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| 291. |
Sponge is solid and can highly compressed why |
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Answer» Sponge is solid and can highly compressed why |
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| 292. |
Will adsorption of ink particles on the surface of chalk piece and absorption of water in the chalk be together considered as Sorption? |
| Answer» Will adsorption of ink particles on the surface of chalk piece and absorption of water in the chalk be together considered as Sorption? | |
| 293. |
Which word in the following sentence is a noun acting like an adjective? The nervous maid got frightened when she dropped the ceramic cookie jar in the living room. |
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Answer» Which word in the following sentence is a noun acting like an adjective? The nervous maid got frightened when she dropped the ceramic cookie jar in the living room. |
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| 294. |
Which among these is correct for space between molecules in different states of matter? |
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Answer» Which among these is correct for space between molecules in different states of matter? |
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| 295. |
How are elements classified? |
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Answer» How are elements classified? |
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| 296. |
Question 4 While lighting a candle, Paheli observed the following changes: (1) Wax was melting. (2) Candle was burning. (3) Size of the candle was reducing (4) Melted wax was getting solidified. Of the above, the changes that can be reversed are |
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Answer» Question 4 While lighting a candle, Paheli observed the following changes: Of the above, the changes that can be reversed are |
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| 297. |
The air smells fresh and clean after it rains |
| Answer» The air smells fresh and clean after it rains | |
| 298. |
The structures that help grapevines hold onto a support are called as____. |
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Answer» The structures that help grapevines hold onto a support are called as____. |
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| 299. |
Choco-chip cookies and ice cream would be classified as : |
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Answer» Choco-chip cookies and ice cream would be classified as : |
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| 300. |
How is paper manufactured? Write in your own words. |
| Answer» How is paper manufactured? Write in your own words. | |
