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MCQOPTIONS
This section includes 2637 Mcqs, each offering curated multiple-choice questions to sharpen your 7th Class knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
DIRECITONS: Read the following three statements and choose the correct answer. (i) Lower chambers of the heart are called auricles (ii) Upper chambers of the heart are called ventricles. (iii) These are no values in a heart. |
| A. | Statement (i) and (iii) are incorrect but (ii) is correct |
| B. | Statement (i) and (ii) are incorrect but (iii) is correct |
| C. | All statements are correct |
| D. | All statements are incorrect |
| Answer» E. | |
| 152. |
In which of the following processes the flow of water molecules from the region of higher water potential to the region of lower water potential through a semipermeable membrane? |
| A. | Osmosis |
| B. | Diffusion |
| C. | Plasmolysis |
| D. | Imbibition |
| Answer» B. Diffusion | |
| 153. |
Consider the following statements, Statement 1. Winds blow from land to ocean in winter Statement 2. Winds blow from land to ocean in summer Choose the correct option form the options given below. |
| A. | (a) Statement 1 is false |
| B. | (b) Statement 1 is true and statement 2 is false |
| C. | (c) Statement 2 is false |
| D. | (d) All of these |
| E. | (e) None of these |
| Answer» C. (c) Statement 2 is false | |
| 154. |
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 Water is essential for living beings. There can be no life without water. There is an amount of water recommended by United Nations for drinking, washing, cooking and maintaining proper hygiene. When is world water day celebrated? |
| A. | March 22 |
| B. | 11018 |
| C. | April 22 |
| D. | 44317 |
| Answer» B. 11018 | |
| 155. |
DIRECTIONS: Read the Passage (s) given below and answer the questions that follow. Passage - 1 Our blood consists of various types of cells. It is a liquid which has various types of cells suspended in it. It contains RBC, WBC, plasma and platelets. They have different functions to perform. Which component of blood helps to fight against germs that may enter our body? |
| A. | RBC |
| B. | WBC |
| C. | both of these |
| D. | none of these |
| Answer» C. both of these | |
| 156. |
A vitamin protects nutrients from being damaged by oxygen. Which one of the following vitamins works for the same purpose? |
| A. | Vitamin A |
| B. | Vitamin B |
| C. | Vitamin K |
| D. | Vitamin E |
| E. | None of these |
| Answer» E. None of these | |
| 157. |
What is overloading? |
| A. | Touching of live wire with the neutral wire |
| B. | Touching of live wire with the Earth wire |
| C. | Touching of neutral wire with the earth wire |
| D. | Drawing extremely large amount of current from the single house, hold circuit |
| E. | None of these |
| Answer» E. None of these | |
| 158. |
Slowly blowing wind is called: |
| A. | Cyclone |
| B. | Typhoon |
| C. | Breeze |
| D. | Storm |
| E. | None of these |
| Answer» D. Storm | |
| 159. |
Wind blows from/in: |
| A. | Low pressure to high pressure area. |
| B. | High pressure to low pressure area. |
| C. | Any direction |
| D. | No direction |
| E. | None of these |
| Answer» C. Any direction | |
| 160. |
Which of the following statements is correct? Statement 1: Wind is produced due to uneven heating between equator and poles. Statement 2: Wind is produced by uneven heating of land and water of oceans. |
| A. | Statement 1 is correct and statement 2 is incorrect. |
| B. | Statement 2 is correct and statement 1 is incorrect. |
| C. | Both the statements 1 and 2 are correct. |
| D. | Both the statements 1 and 2 are incorrect. |
| E. | None of these |
| Answer» D. Both the statements 1 and 2 are incorrect. | |
| 161. |
DIRECTIONS: On the basis of following diagram/ picture answer the questions given below: A small wooden box of mass 1 kg is placed on a big wooden box of mass 2 kg. The big box is moving on a smooth surface with a constant. Velocity 2 m/sec. The K.E. possessed by this system is (Assume there is no frictional force between the surfaces) |
| A. | 4J |
| B. | 8J |
| C. | 6J |
| D. | 12J |
| Answer» D. 12J | |
| 162. |
By whom was the circulation of blood discovered? |
| A. | Galileo Galilie |
| B. | William Harvey |
| C. | Both of these |
| D. | none of these |
| Answer» C. Both of these | |
| 163. |
Why is sea water unfit for use in factories though it is available in plenty? |
| A. | It contains bacteria. |
| B. | It has foul smell. |
| C. | It is heavier than tap water. |
| D. | It has salts which get deposited in the pipelines and boilers. |
| Answer» E. | |
| 164. |
Refer to the given flow chart and select the option which correctly identifies P, Q, |
| A. | P Q R S Relative humidity Wind speed Thermometer Rain gauge |
| B. | P Q R S Wind speed Relative humidity Thermo-meter Psychro-meter |
| C. | P Q R S Relative humidity Wind speed Psychro meter Rain gauge |
| D. | P Q R S Wind speed Relative humidity Thermo-meter Rain gauge |
| Answer» B. P Q R S Wind speed Relative humidity Thermo-meter Psychro-meter | |
| 165. |
Read the given passage.The land near the equator is colder than the land away from it. Near the equator Sun's rays fall vertically. As the latitude increases, the rays become more and more slanting. Vertical rays spread over a larger land area than slanting rays. Also, they pass through a thicker layer of the atmosphere which absorbs a large part of their heat. Hence, the land near the equation -gets heated up lesser by the Sun than the land away from it, in a given time.Some of the words have been italicized in the given passage. Select the Incorret statement regarding these. |
| A. | The words colder and lesser need not to be replaced as they are correctly mentioned. |
| B. | Larger should be replaced by smaller |
| C. | Thicker should be replaced by thinner. |
| D. | None of these |
| Answer» B. Larger should be replaced by smaller | |
| 166. |
The pulmonary arteries carry |
| A. | pure blood |
| B. | impure blood |
| C. | blood to kidney |
| D. | blood from the kidney |
| Answer» C. blood to kidney | |
| 167. |
DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Climate of North East India is dry. (ii) It rains heavily in Rajasthan and Gujarat. (iii) Kerala is very hot and wet in comparison to Jammu and Kashmir |
| A. | Statements (i) and (iii) are incorrect but (ii) is correct |
| B. | Statements (i) and (ii) are incorrect but (iii) is correct. |
| C. | All statements are correct. |
| D. | All statements are incorrect. |
| Answer» C. All statements are correct. | |
| 168. |
The winds on the earth do not flow in the exact "north to south" or "south to north" directions. Why? |
| A. | Due to the seasons of the earth |
| B. | Due to the shape of the earth |
| C. | Due to the rotation of the earth |
| D. | Due to the revolution of the earth |
| Answer» D. Due to the revolution of the earth | |
| 169. |
The normal body temperature in the clinical thermometer on the Celsius scale represents which one of the following temperature? |
| A. | \[\text{24 }\!\!{}^\circ\!\!\text{ C}\] |
| B. | \[45{}^\circ C\] |
| C. | \[57{}^\circ C\] |
| D. | \[37{}^\circ C\] |
| E. | None of these |
| Answer» E. None of these | |
| 170. |
The automobiles require a heavy reflector. The headlight of the car is made up of which one of the following reflectors? |
| A. | Concave reflectors |
| B. | Convex reflectors |
| C. | Plane reflectors |
| D. | All of these |
| E. | None of these |
| Answer» B. Convex reflectors | |
| 171. |
On what factors does the rate of evaporation depend? |
| A. | Temperature of the liquid |
| B. | Area of the liquid exposed to heat |
| C. | Wind blowing over the liquid |
| D. | All of the above |
| Answer» E. | |
| 172. |
DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of I the assertion. Select your answers to these items using codes given below. Assertion (A): We can see objects in sunlight only. Reason (R): Sunlight causes a sensation of vision. |
| A. | Both A and R are true and R is the correct explanation of A. |
| B. | Both A and R are true but R is not the correct explanation of A. |
| C. | A is true but R is false. |
| D. | A is false but R is true. |
| Answer» E. | |
| 173. |
Trade waste, refers to |
| A. | waste that originates from kitchens |
| B. | waste that originates from toilets. |
| C. | waste that originates from industrial and commercial organizations. |
| D. | All the above. |
| Answer» D. All the above. | |
| 174. |
Select the disease that is not caused by improper disposal of sewage. |
| A. | Cholera |
| B. | Typhoid |
| C. | Heart attack |
| D. | Jaundice |
| Answer» D. Jaundice | |
| 175. |
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 The chemical substances which are rich from nutrients and used to maintain soil fertility are called fertilizers. They also produce harmful effects. They remain in the soil and spoil porous structure of the soil which is essential for plant growth. They also kill the soil organisms like earthworms. Earthworms burrows and loosens the soil and make it porous. Which of the following statements is correct? |
| A. | Excessive use of chemical fertilizers cause soil pollution |
| B. | Organic manure should be used to decrease soil pollution |
| C. | Fertilizers spoil porous structure of the soil. |
| D. | Both (a) and (b) |
| Answer» E. | |
| 176. |
Tropical region is best described by which one of the following options? |
| A. | Hot and humid |
| B. | Cold and humid |
| C. | Moderate temperature |
| D. | All of these |
| E. | None of these |
| Answer» B. Cold and humid | |
| 177. |
DIRECTIONS: Read the passage (s) given below and answer the questions that follow Passage - 2 The process of waste disposal or removal of wastes is called excretion. In plants, water and salts are absorbed by roots and carried by xylem. Plants store some waste products. These are useful to us. The solution of minerals, water, food and gases that is carried through xylem and phloem is called |
| A. | sol |
| B. | Sap |
| C. | cytoplasm |
| D. | protoplasm |
| Answer» C. cytoplasm | |
| 178. |
The soil with particle size of 0.2 mm to 2.0 mm. |
| A. | silt |
| B. | gravel |
| C. | sandy soil |
| D. | clayey soil |
| Answer» D. clayey soil | |
| 179. |
______ helps to maintain a balance in a monkey. |
| A. | legs |
| B. | hands |
| C. | tail |
| D. | head |
| Answer» D. head | |
| 180. |
Which one of the following causes scarcity of water? |
| A. | Overpopulation |
| B. | Deforestation |
| C. | Scanty rainfall |
| D. | All of these |
| E. | None of these |
| Answer» E. None of these | |
| 181. |
Water harvesting means |
| A. | to get a crop of water |
| B. | the use of rain water to recharge ground water |
| C. | the use of rain water to discharge ground water |
| D. | None of these |
| Answer» C. the use of rain water to discharge ground water | |
| 182. |
The ultimate source of energy in the nature is: |
| A. | Plants |
| B. | Oceans |
| C. | Sun |
| D. | Animals |
| E. | None of these |
| Answer» D. Animals | |
| 183. |
A rose is used as the indicator in the chemical laboratory. Name it |
| A. | Red rose |
| B. | Blue rose |
| C. | China rose |
| D. | All of these |
| E. | None of these |
| Answer» D. All of these | |
| 184. |
Polar bears show camouflage due to: |
| A. | Padded feet |
| B. | Thick fur |
| C. | White fur |
| D. | Two layers of fat |
| E. | None of these |
| Answer» D. Two layers of fat | |
| 185. |
Match the following: Column A Column B (i) Toucan [A] Long, strong and sharp claws (ii) Penguin [B] Beard ape (iii) Tiger [C] Flipper-like wings (iv) Lion-tailed macaque [D] Change the colour of its feathers |
| A. | (i - C), (ii - D), (iii - A), (iv - B) |
| B. | (i - B), (ii - C), (iii - A), (iv - D) |
| C. | (i - D), (ii - C), (iii - A), (iv - B) |
| D. | (i - D), (ii - A), (iii - C), (iv - B) |
| E. | None of these |
| Answer» D. (i - D), (ii - A), (iii - C), (iv - B) | |
| 186. |
One of our body organs is used to filter waste products of the blood. |
| A. | Heart |
| B. | Lungs |
| C. | Kidney |
| D. | Stomach |
| Answer» D. Stomach | |
| 187. |
These choke the drains |
| A. | Liquid wastes |
| B. | Plastic |
| C. | Excreta |
| D. | All of these |
| Answer» C. Excreta | |
| 188. |
Horizons differ from each other in: |
| A. | colour |
| B. | depth |
| C. | chemical composition |
| D. | All of the above |
| Answer» E. | |
| 189. |
Reason behind the Sea breeze and land breeze is: |
| A. | Uneven heating between the equator and poles. |
| B. | Uneven heating of land and water of oceans. |
| C. | Air exerts pressure. |
| D. | All the above |
| E. | None of these |
| Answer» C. Air exerts pressure. | |
| 190. |
The eye of a cyclone is: |
| A. | Cloudy and highly stormy. |
| B. | Full of strong winds. |
| C. | Calm and cloudless. |
| D. | Site with high atmospheric pressure. |
| E. | None of these |
| Answer» D. Site with high atmospheric pressure. | |
| 191. |
Fungi and bacteria grow mostly in which layer of soil? |
| A. | Subsoil |
| B. | Top soil |
| C. | Bed rock |
| D. | All the above |
| Answer» C. Bed rock | |
| 192. |
In the following figure, speed and direction of a car at three different time interval has been shown. Is the body in uniform acceleration? |
| A. | Yes |
| B. | No |
| C. | Cannot be determined |
| D. | All of these |
| E. | None of these |
| Answer» B. No | |
| 193. |
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 Weather is such a complex phenomenon that it can vary over very short periods of time. All changes in weather are caused by the sun. Energy absorbed and reflected by the earth's surface, ocean and atmosphere play important roles in determining the weather at a place. Choose the instrument used to measure the rainfall at a place. |
| A. | Hydrometer |
| B. | Hygrometer |
| C. | Rain-gauge |
| D. | None of these |
| Answer» D. None of these | |
| 194. |
DIRECTIONS: The questions in this segment consist of two statements, one labeled as ?Assertion A? and the other labeled as ?Reason R?. You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below Assertion (A): A moving hammer drives a nail into wood. Reason (R): A moving hammer has potential energy. |
| A. | Both A and R are true and R is the correct explanation of A. |
| B. | Both A and R are true but R is not the correct explanation of A. |
| C. | A is true but R is false. |
| D. | A is false but R is true. |
| Answer» D. A is false but R is true. | |
| 195. |
DIRECTIONS: Read the following three statements carefully and choose the correct option. (i) Tea, coffee grow very well in sandy soil. (ii) Capacity to hold water is much in sandy soil than clayey soil. (iii) Clayey soil has poor air circulation. |
| A. | Statement (i) and (iii) are incorrect while statement (ii) is correct. |
| B. | Statement (i) and (ii) are incorrect while (iii) is correct. |
| C. | All the statements are correct. |
| D. | All the statements are incorrect. |
| Answer» C. All the statements are correct. | |
| 196. |
The process of groundwater getting stored between the layers of hard rock below the water table is known as ________. |
| A. | infiltration |
| B. | Aquifer |
| C. | water table |
| D. | Bawri |
| Answer» C. water table | |
| 197. |
In carrying oxygen from the atmosphere to the cells, not only respiratory system but also circulatory system is involved. In which one of the following organs oxygen enters into circulatory system from respiratory system? |
| A. | Heart |
| B. | Lung |
| C. | Kidney |
| D. | Brain |
| E. | None of these |
| Answer» C. Kidney | |
| 198. |
The above chart shows the oxygen content in four samples of blood taken from four different blood vessels of the body. Which sample is most probably taken from a pulmonary artery? |
| A. | P |
| B. | Q |
| C. | R |
| D. | S |
| Answer» E. | |
| 199. |
In a chemical reaction ________ is transferred from one atom to another. |
| A. | Electrons |
| B. | Protons |
| C. | Neutrons |
| D. | Atomic number |
| E. | None of these |
| Answer» B. Protons | |
| 200. |
Which of the following is shown by humidity? |
| A. | Moisture |
| B. | Carbon dioxide |
| C. | Air pollutants |
| D. | Rainfall |
| E. | None of these |
| Answer» B. Carbon dioxide | |