InterviewSolution
Saved Bookmarks
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.
| 51. |
Why do we use coloured water in this experiment ? |
| Answer» To record the rise in the level of water in the glass tube correctly | |
| 52. |
Why is KOH solution used in this experiment ? |
| Answer» KOH solution absorbs the `CO_2` released during respiration | |
| 53. |
What is pH ? |
| Answer» The pH of a solution is defined as the negative logarithm of the hydrogen ion concentration of the solution . i.e, pH = -log `[H^(+)]` | |
| 54. |
What is the value of the ionic product of water at ` 25^(@)C` ? |
| Answer» `10^(-14) mol^(2) L^(-2)` | |
| 55. |
Why is the mouth of the conical flask corked ? |
| Answer» This is done to prevent the splash of the liquid during tilting | |
| 56. |
The major function of stem isA. absorption of waterB. conduction of waterC. to hold branches and leavesD. photosynthesis |
| Answer» Correct Answer - C | |
| 57. |
What is the most characteristic feature of spirogyra ? |
| Answer» It has ribbon-shaped, spirally arranged chloroplasts . | |
| 58. |
Why are fungi heterotrophic? |
| Answer» Fungi are heterotrophic because they obtain their food either from dead organic matter (saprophytes) or form living organisms. | |
| 59. |
How do fungi differ from algae ? |
| Answer» Algae are autotrophic and have a cell wall made of cellulose, while fungi are heterotrophic and have cell wall made of chitin. | |
| 60. |
What are thallophytes ? |
| Answer» The plants which are not differentiated into roots , stems, and leaves , and are without vascular tissues are called thallophytes. | |
| 61. |
What are algae ? |
| Answer» Algae are chlorophyll-bearing thallophytes which are usually aquatic. | |
| 62. |
Parenchyma which contains chlorophyll is called:A. collenchymaB. SclerenchymaC. chlorenchymaD. None of these |
| Answer» Correct Answer - C | |
| 63. |
If an alga is devoid of chlorophyll , would you call it a fungus ? |
| Answer» No , there are vertain algae which lack chlorophyll and are parasitic in nature. | |
| 64. |
What happens when light falls on chlorophyll molecules ? |
| Answer» The chlorophyll molecules absorb the light , get excited and emit electrons | |
| 65. |
How are stomata differentiated from the surrounding epidermal cells ? |
| Answer» Compared to the epidermal cells, the guard cells are smaller , different in shape and have thicker inner walls . | |
| 66. |
Cockroaches are closely related toA. cricketsB. mosquitoesC. beetlesD. houseflies |
| Answer» Correct Answer - A | |
| 67. |
Which of the following is a true worm ?A. FlatwormB. Glow wormC. LugwormD. Roundworm |
| Answer» Correct Answer - D | |
| 68. |
The heart of a fish isA. ventralB. three-chamberedC. nonmuscularD. nonpulsatile |
| Answer» Correct Answer - A | |
| 69. |
Which structure in an earthworm is responsible for absorption ?A. TrphlosoleB. GizzardC. Hepatic caecaD. Pharynx |
| Answer» Correct Answer - A | |
| 70. |
Which characteristic feature of an earthworm makes it different from leeches?A. The mode of locomotionB. The mode of feedingC. Musculature of its bodyD. All of these |
| Answer» Correct Answer - D | |
| 71. |
Which characteristic feature of an earthworm makes it different from leeches ?A. The mode of locomotionB. The mode of feedingC. Musculature of its bodyD. All of the above |
| Answer» Correct Answer - D | |
| 72. |
What do earthworm eat ?A. Soil with organic matterB. LeavesC. InsectsD. Bacteria |
| Answer» Correct Answer - A | |
| 73. |
The largest cell of the body of an earthworm is in itsA. testisB. ovaryC. intestineD. coelomic fluid |
| Answer» Correct Answer - B | |
| 74. |
Earthworms lackA. nervesB. heartC. kidneyD. haemoglobin |
| Answer» Correct Answer - C | |
| 75. |
What type of organism is yeast ? |
| Answer» Yeast is a unicellular fungus. | |
| 76. |
Which cell organelle is associated with aerobic respiration ? |
| Answer» Correct Answer - Mitochondrion | |
| 77. |
What are angiosperms ? |
| Answer» All flower-bearing plants are called angiosperms. | |
| 78. |
How will you define a flower ? |
| Answer» A flower may be defined as a modified shoot which is meant essentially for the reproduction of the plant. | |
| 79. |
Which group of angiosperms has reticulate venation in leaves and vascular bundles arranged in a ring ? |
| Answer» Correct Answer - Dicots | |
| 80. |
A mixture of chalk powder and water makes aA. colloidal solutionB. suspensionC. clear solution .D. homogeneous solution |
| Answer» Correct Answer - B | |
| 81. |
which of the following will give a true solution when dissolved in water ?A. Find sandB. KeroseneC. Charcoal powderD. Potash alum |
| Answer» Correct Answer - D | |
| 82. |
The pH scale extends fromA. 0 to 10B. 0 to 14C. 10 to 14D. 5 to 15 |
| Answer» Correct Answer - B | |
| 83. |
Pure water isA. Acidic .B. basicC. neutralD. none of these |
| Answer» Correct Answer - C | |
| 84. |
When `CO_(2)` gas is dissolved in water, the pH of the solution becomes.A. more than 7B. equal to 7C. less than 7D. none of these |
| Answer» Correct Answer - C | |
| 85. |
The pH value of pure water can be increased byA. adding an acidB. removing some waterC. adding a baseD. none of the above |
| Answer» Correct Answer - C | |
| 86. |
Which of the following will give a true solution when dissolved in water ?A. Fine sandB. OilC. Chalk powderD. Sugar |
| Answer» Correct Answer - D | |
| 87. |
A true solution isA. Clear and transparentB. turbid and translucentC. milky and opaqueD. none of the above |
| Answer» Correct Answer - A | |
| 88. |
Define the tissues. |
| Answer» A tissue is a group of cells with similar structure organised to do a common function . | |
| 89. |
Can the pH value of a solution be zero ? |
| Answer» Correct Answer - Yes | |
| 90. |
The element essentially present in all acids isA. oxygenB. hydrogenC. sulphurD. chlorine |
| Answer» Correct Answer - B | |
| 91. |
What is the difference between a catabolic process and an anabolic process ? |
| Answer» In a catabolic process complex molecules are broken down into smaller and simpler molecules, while in an anabolic process complex molecules are formed from simpler molecules . | |
| 92. |
Name the stain used for staining animal cells |
| Answer» Methylene blue | |
| 93. |
Which stain is used for staining plant cells ? |
| Answer» Correct Answer - Safranin | |
| 94. |
What are food adulterants ? |
| Answer» Cheap and inferior materials mixed with foodstuff are called food adulterants. | |
| 95. |
In which form is carbohydrate stored in plants ? |
| Answer» Correct Answer - Starch | |
| 96. |
In which form is carbohydrate stored in animals ? |
| Answer» Correct Answer - Glycogen | |
| 97. |
Name the substance which is used to prepare blue-black inkA. `Fe(OH)_(2)`B. `Fe_(2)(SO_(4))_(3)`C. `FeSO_(4)`D. `Fe_(2)O_(3)` |
| Answer» Correct Answer - C | |
| 98. |
Sulphur dioxide is not recognized byA. odour testB. litmus paper testC. acidified `K_(2)Cr_(2)O_(7)`D. colour test |
| Answer» Correct Answer - D | |
| 99. |
solution of `SO_(2)` gas in water is acidic due to the formation ofA. `H_(2)SO_(4)`B. `H_(2)SO_(3)`C. `H_(2)S`D. `SO_(3)` |
| Answer» Correct Answer - B | |
| 100. |
Sulphur dioxide gas is dried by passing through concentrated `H_(2)SO_(4)` because.A. concentrated `H_(2)SO_(4)` becauseB. concentrated `H_(2)SO_(4)` oxidizes `SO_(2)`C. concentrated `H_(2)SO_(4)` is a disbasic acidD. none of the above |
| Answer» Correct Answer - A | |