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.
| 401. |
Which of the following pairs make a homogeneous mixture ?A. Sand and waterB. Soil and waterC. Oil and waterD. Glucose and water |
| Answer» Correct Answer - D | |
| 402. |
Which of the following does make a homogeneous mixture ?A. Fine sand in waterB. Sugar in waterC. Soil in waterD. Powdered marble in water |
| Answer» Correct Answer - B | |
| 403. |
Which of the following is an example of a homogeneous mixture ?A. Potash alum in waterB. Oil and waterC. Sea waterD. Air |
| Answer» Correct Answer - C | |
| 404. |
During the determination of the boiling point of water the thermometer is keptA. dipped in waterB. a little above waterC. far above waterD. out of contact with the water vapour |
| Answer» Correct Answer - B | |
| 405. |
Major loss of water in transpiration occurs throughA. lenticelsB. cuticleC. stomataD. hydathodes |
| Answer» Correct Answer - C | |
| 406. |
Suggest a method other than sublimation by which the components of a mixture of sugar and camphor can be separated. |
| Answer» The mixture is poured in water in a beaker and stirred. Suggar goes into the solution. Camphor is filtered out. The Filtrate is evaporated to dryness to get back the sugar. | |
| 407. |
Which of the following pairs make pairs make a homogeneous mixture ?A. sand and waterB. Soil and waterC. Oil and waterD. Glucose and water |
| Answer» Correct Answer - D | |
| 408. |
A mixture is made of two substance . Carbon disulphide is added to the mixture. The substance that dissolves may beA. CharcoalB. SandC. SulphurD. sugar |
| Answer» Correct Answer - C | |
| 409. |
The stomatal aperture remains surrounded byA. cuticleB. epidermal cellsC. guard cellsD. lenticels |
| Answer» Correct Answer - C | |
| 410. |
Stoma remains closed when guard cells are _______.A. flaccidB. turgidC. bean-shapedD. dumb-bell-shaped |
| Answer» Correct Answer - B | |
| 411. |
An odourless and colourless gas extinguishes a burning splinter of wood and turns limewater milky. What is the gas ? |
| Answer» The gas is carbon dioxide. | |
| 412. |
Common salt can be separated from its aqueous solution byA. filtrationB. decantationC. evaporationD. sublimation |
| Answer» Correct Answer - C | |
| 413. |
Barium sulphate dissolves in which of the following ?A. Dilute hydrochloric acidB. Concentrated sulphuric acidC. Concentrated hydrochloric acidD. In none of these |
| Answer» Correct Answer - D | |
| 414. |
Barium sulphate dissolves in which of the following ?A. sulphur dioxideB. carbon dioxideC. hydrogenD. hydrogen sulphide |
| Answer» Correct Answer - C | |
| 415. |
Which of the following remains undissolved when treated with water ?A. Washing sodaB. Common saltC. SandD. Sugar |
| Answer» Correct Answer - C | |
| 416. |
The colour of the precipitate obtained when an aqueous solution of sodium chloride is treated with silver nitrate solution isA. blackB. yellowishC. pinkD. curdy white |
| Answer» Correct Answer - D | |
| 417. |
The insoluble product obtained when a solution of barium chloride is added to a solution of sodium sulphate isA. barium sulphateB. barium sulphiteC. sodium nitrateD. sodium chloride |
| Answer» Correct Answer - A | |
| 418. |
The particles of a substance suspended in a suspension can be separated byA. filtrationB. heatingC. coolingD. hand-picking |
| Answer» Correct Answer - A | |
| 419. |
The phenomenon observed when a beam of light is allowed to pass through a colloidal solution is calledA. Peltier effectB. LuminescenceC. PhosphorescenceD. Tyndall effect |
| Answer» Correct Answer - D | |
| 420. |
Name some good sources of strach. |
| Answer» Potato , rice,wheat and maize | |
| 421. |
When sodium chloride is dissolved in water the solution obtained isA. homogeneousB. heterogeneousC. non-uniform in compositionD. turbid |
| Answer» Correct Answer - A | |
| 422. |
Which of the following pairs can produce a colloidal solution ?A. Sodium chloride and waterB. Soil and waterC. Glucose and waterD. Egg albumen and water |
| Answer» Correct Answer - D | |
| 423. |
When sodium chloride is dissolved in water the solution obtained isA. Homogeneous.B. heterogeneousC. non - unifrom in compositionD. turbid |
| Answer» Correct Answer - A | |
| 424. |
Which of the following pairs can produce a colloidal solution ?A. Sodium chloride and waterB. Soil and waterC. Glucose and waterD. Glucose and water |
| Answer» Correct Answer - C | |
| 425. |
Which of the following statements is correct regarding the colloid of starch in water ?A. It can be separated by filtrationB. It is transparent and unstableC. It shows Tyndall effectD. It s particles are visible to the naked eye |
| Answer» Correct Answer - A | |
| 426. |
Which of the following statements is correct regarding the colloid of starch in water ?A. It can be separated by filtration .B. It is transparent and ustable .C. It shows Tyndall effect.D. Its particles are visible to the naked eye . |
| Answer» Correct Answer - C | |
| 427. |
Name some good sources of starch |
| Answer» Potato, rice , wheat and maize | |
| 428. |
STARCH- AMYLOSE |
| Answer» Starch is a polymer of glucose and is a complex carbohydrate | |
| 429. |
Which chemical is used to test the presence of starch ? |
| Answer» Iodine solution | |
| 430. |
Why do we boil the leaf in alcohol when we are testing it for starch ? |
| Answer» To remove all the chlorophyll pigments and for decolouring the leaf | |
| 431. |
Birds have beaks forA. building nestsB. fightingC. catching foodD. all of these |
| Answer» Correct Answer - D | |
| 432. |
A true solution of cane sugar is prepared by dissolvingA. cane sugar in waterB. cane sugar in dilute HCIC. cane sugar in aqua regiaD. cane sugar in sea water |
| Answer» Correct Answer - A | |