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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.
| 1451. |
Which of the following can form real images? |
| A. | A plane mirror |
| B. | A convex mirror |
| C. | A convex lens |
| D. | A concave lens |
| Answer» D. A concave lens | |
| 1452. |
What is the angle of reflection in the figure shown here? |
| A. | \[{{35}^{o}}\] |
| B. | \[{{65}^{o}}\] |
| C. | \[{{55}^{o}}\] |
| D. | \[{{25}^{o}}\] |
| Answer» D. \[{{25}^{o}}\] | |
| 1453. |
A ray of light is incident on a plane mirror at an angle of incidence of\[{{30}^{o}}.\]What is the angle of reflection? |
| A. | \[30{}^\circ \] |
| B. | \[60{}^\circ \] |
| C. | \[90{}^\circ \] |
| D. | \[120{}^\circ \] |
| Answer» B. \[60{}^\circ \] | |
| 1454. |
DIRECTIONS: On the basis of following diagram/ picture answer the questions given below: Beams of light are incident through the holes A and B and emerge out of box through the holes C and D respectively as shown in the figure. Which of the following could be inside the box? |
| A. | A rectangular glass slab |
| B. | A convex lens |
| C. | A concave lens |
| D. | A prism |
| Answer» B. A convex lens | |
| 1455. |
DIRECTIONS: On the basis of following diagram/ picture answer the questions given below: Two children are standing in front of a plane mirror as shown. When the child A looks into the mirror, how far away from it will image of child B appear to be? |
| A. | 9m |
| B. | 18m |
| C. | 11m |
| D. | 16m |
| Answer» D. 16m | |
| 1456. |
DIRECTIONS: Read the following three statements carefully and choose the correct option. Statement 1: In an image formed by a mirror, the left side of the object is seen as the right side in the image. Statement 2: The capital English letter 'A' does not show a lateral inversion. Statement 3: Side view mirrors of car are convex mirror. |
| A. | Statement (1) and (3) are incorrect while statement (2) is correct. |
| B. | Statement (1) and (2) are incorrect while (3) is correct. |
| C. | All the statements are correct. |
| D. | All the statements are incorrect. |
| Answer» B. Statement (1) and (2) are incorrect while (3) is correct. | |
| 1457. |
DIRECTIONS: Read the following three statements carefully and choose the correct option. Statement 1: When an object is placed between two plane parallel mirrors, then all the images found are of equal intensity. Statement 2: In case of plane parallel mirrors, only two images are possible. Statement 3: A ray incident normal to the mirror does not retraces its path. |
| A. | Statement (1) and (3) are incorrect while statement (2) is correct. |
| B. | Statement (1) and (2) are incorrect while (3) is correct. |
| C. | All the statements are correct. |
| D. | All the statements are incorrect. |
| Answer» B. Statement (1) and (2) are incorrect while (3) is correct. | |
| 1458. |
DIRECTIONS: The questions in this segment consists 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 plane mirror produces virtual, erect image for any position of the object. Reason (R): Plane mirror has finite focal length. |
| 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. | |
| 1459. |
DIRECTIONS: The questions in this segment consists 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 convex lens always forms real images for all the positions of an object. Reason (R): The convex lens converges the rays, and hence, forms real image. |
| 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. | |
| 1460. |
DIRECTIONS: The questions in this segment consists 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): Red light travels faster in glass than green light. Reason (R): The refractive index of glass is less for red light than for green light. |
| 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. | |
| 1461. |
DIRECTIONS: The questions in this segment consists 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): Convex mirror used is street lights. Reason (R): Convex mirror diverges light over a small area than the plane mirror. |
| 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. | |
| 1462. |
DIRECTIONS: The questions in this segment consists 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): Rainbow is an example of the dispersion of sunlight by the water droplets. Reason (R): Light of shorter wavelength is scattered much more than light of larger wavelength. |
| 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» C. A is true but R is false. | |
| 1463. |
Read the given statements and select the correct option. Statement 1: When a ray of light passes from air into water, it will bent towards the normal. Statement 2: When light travels from air into water, its speed increases. |
| A. | Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. |
| B. | Both statements 1 and 2 are true and statement 2 is not the correct explanation of statement 1. |
| C. | Statement 1 is true but statement 2 is false. |
| D. | Statement 1 is false but statement 2 is true. |
| Answer» D. Statement 1 is false but statement 2 is true. | |
| 1464. |
Consider the following statements and select the correct option which correctly identifies true (T) and false (F).(i) Concave mirror is used for side view mirror in vehicles.(ii) The image formed by a plane mirror is upright.(iii) When a person moves closer to a plane mirror, the size of his image in the mirror remains the same.(iv) In the case of reflection, virtual image of the object is formed on the same side as the object. |
| A. | (i)(ii)(iii)(iv)TFFT |
| B. | (i)(ii)(iii)(iv)FTTF |
| C. | (i)(ii)(iii)(iv)FTFT |
| D. | (i)(ii)(iii)(iv)TFTF |
| Answer» C. (i)(ii)(iii)(iv)FTFT | |
| 1465. |
What is a stream of light called? |
| A. | Ray |
| B. | Beam |
| C. | Twilight |
| D. | Sunlight |
| Answer» C. Twilight | |
| 1466. |
A bus driver is reversing his bus at a speed\[8\text{ }m\text{ }{{s}^{-1}}\]. The rear view mirror of a bus is a plane mirror. The driver sees in his rear view mirror the image of a car parked behind his bus. The speed at which the image of the car appears to approach the driver will be |
| A. | \[2\text{ }m\text{ }{{s}^{-1}}\] |
| B. | \[4\text{ }m\text{ }{{s}^{-1}}\] |
| C. | \[8\text{ }m\text{ }{{s}^{-1}}\] |
| D. | \[16\text{ }m\text{ }{{s}^{-1}}\] |
| Answer» E. | |
| 1467. |
Surfaces used in study of reflection of light are |
| A. | Polished |
| B. | Rough |
| C. | Black painted |
| D. | None of these |
| Answer» B. Rough | |
| 1468. |
When a light ray is reflected repeatedly by a set of parallel plane mirrors, the intensity of the light ray decreases after some reflections. This is because of |
| A. | Poor reflection from mirrors |
| B. | Absorption of some amount of light by mirrors |
| C. | Dispersion of light when the rays travel through the atmosphere |
| D. | Scattering of light by the mirrors. |
| Answer» C. Dispersion of light when the rays travel through the atmosphere | |
| 1469. |
Burning of food to release energy is: |
| A. | Photosynthesis |
| B. | Respiration |
| C. | Translocation |
| D. | Transpiration |
| E. | None of these |
| Answer» C. Translocation | |
| 1470. |
Which type of pollination is shown in the given figure? |
| A. | Self pollination |
| B. | Cross pollination |
| C. | No pollination |
| D. | Fertilization |
| E. | None of these |
| Answer» C. No pollination | |
| 1471. |
By mistake Ravi left a slice of bread on the kitchen slab in summers. When he came back after two days he found a dark green layer over the bread. This layer was of ___ and it reproduces by ____ . |
| A. | Bacteria, budding |
| B. | Spirogyra, fragmentation |
| C. | Mould, spore formation |
| D. | Bryophyllum, leafmotificor |
| E. | None of these |
| Answer» D. Bryophyllum, leafmotificor | |
| 1472. |
Oxygenated blood first, enters in which of the following parts of the heart from the lungs? |
| A. | Right Ventricle |
| B. | Right atrium |
| C. | Left ventricle |
| D. | Left atrium |
| E. | None of these |
| Answer» E. None of these | |
| 1473. |
Tiny filters present in the kidney: |
| A. | Neurons |
| B. | Ureters |
| C. | Nephrons |
| D. | Bladders |
| E. | None of these |
| Answer» E. None of these | |
| 1474. |
Which of the following is excretory product of fish? |
| A. | Hydrogen |
| B. | Nitrogen |
| C. | Oxygen |
| D. | Ammonia |
| E. | None of these |
| Answer» E. None of these | |
| 1475. |
Which of the following statements is correct? (i) When we breathe in the ribcage moves upward and outward. (ii) When we breathe in the ribcage moves downward and inwards. (iii) When we breathe in diaphragm moves downward. (iv) When we breathe in diaphragm moves upward. |
| A. | (i) and (iv) |
| B. | (ii) and (iii) |
| C. | (i) and (iii) |
| D. | All the above |
| E. | None of these |
| Answer» D. All the above | |
| 1476. |
A wall separating left side of heart from right side of heart is: |
| A. | Diaphragm |
| B. | Sternum |
| C. | Septum |
| D. | Platelet |
| E. | None of these |
| Answer» D. Platelet | |
| 1477. |
Component of blood which helps in clotting of blood. |
| A. | Red blood cells |
| B. | White blood cells |
| C. | Plasma |
| D. | Platelets |
| E. | None of these |
| Answer» E. None of these | |
| 1478. |
Match the following: Column A Column B (i) Arteries [A] Exchange of gases (ii) Veins [B] Liquid part of blood (iii) Capillaries [C] Deoxygenated blood (iv) Plasma [D] Oxygenated blood |
| A. | (i - B), (ii - C), (iii - D), (iv - A) |
| B. | (i - D), (ii - C), (iii - A), (iv - B) |
| C. | (i - D), (ii - A), (iii - B), (iv - C) |
| D. | (i - C), (ii - D), (iii - B), (iv - A) |
| E. | None of these |
| Answer» C. (i - D), (ii - A), (iii - B), (iv - C) | |
| 1479. |
Which among the following has hooks over its seeds? |
| A. | Balsam |
| B. | Urena |
| C. | Maple |
| D. | Sunflower |
| E. | None of these |
| Answer» C. Maple | |
| 1480. |
Exchange of gases, digested food between blood and tissues takes place through the walls: |
| A. | Heart |
| B. | Arteries |
| C. | Veins |
| D. | Capillaries |
| E. | None of these |
| Answer» E. None of these | |
| 1481. |
A curved sheet of muscle forming the floor of chest cavity. |
| A. | Ribcage |
| B. | Bronchiole |
| C. | Larynx |
| D. | Diaphragm |
| E. | None of these |
| Answer» E. None of these | |
| 1482. |
Blood vessel that carries blood from heart to all the parts of body? |
| A. | Veins |
| B. | Arteries |
| C. | Capillaries |
| D. | Platelets |
| E. | None of these |
| Answer» C. Capillaries | |
| 1483. |
A flower containing either only male or female reproductive organs is said to be: |
| A. | Hermaphrodite |
| B. | Complete flower |
| C. | Incomplete flower |
| D. | Seed |
| E. | None of these |
| Answer» D. Seed | |
| 1484. |
The cell which results after fusion of gametes is called: |
| A. | Spore |
| B. | Embryo |
| C. | Zygote |
| D. | Pistil |
| E. | None of these |
| Answer» D. Pistil | |
| 1485. |
Which force is behind the pulling of water and minerals from of trees? |
| A. | Gravitational force |
| B. | Conduction force |
| C. | Suction force |
| D. | All the above |
| E. | None of these |
| Answer» D. All the above | |
| 1486. |
Yawning helps in: |
| A. | Removing unwanted waste. |
| B. | Inhaling a deep breath of air. |
| C. | Sneezing |
| D. | All the above |
| E. | None of these |
| Answer» C. Sneezing | |
| 1487. |
Dandelion seeds are dispersed by: |
| A. | Wind |
| B. | Water |
| C. | Animals |
| D. | Explosion |
| E. | None of these |
| Answer» B. Water | |
| 1488. |
Match the following: Column A Column B (i) Butterfly [A] Lungs (ii) Earthworm [B] Cell membrane (iii) Amoeba [C] Moist Outer surface (iv) Birds [D] Spiracles |
| A. | (i - B), (ii - C), (iii - A), (iv - D) |
| B. | (i - D), (ii- C), (iii - B), (iv - A) |
| C. | (i - D), (ii - B), (iii - C), (iv - A) |
| D. | (i - B), (ii - D), (iii - C), (iv - A) |
| E. | None of these |
| Answer» C. (i - D), (ii - B), (iii - C), (iv - A) | |
| 1489. |
Raghu gets muscle cramp just after coming from running, the reason can be: |
| A. | Accumulation of alcohol in the muscles. |
| B. | Accumulation of lactic acid in the muscles. |
| C. | Accumulation of citric acid in the muscles. |
| D. | Damaged leg. |
| E. | None of these |
| Answer» C. Accumulation of citric acid in the muscles. | |
| 1490. |
Zygote is formed in which part of the flower? |
| A. | Petals |
| B. | Sepals |
| C. | Stamens |
| D. | Ovary |
| E. | None of these |
| Answer» E. None of these | |
| 1491. |
Which of the following statements is correct? Statement 1: Pollination occurs after fertilization. Statement 2: Fertilization occurs after pollination. |
| 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» C. Both the statements 1 and 2 are correct. | |
| 1492. |
With the help of gills a fish can: |
| A. | Absorb nutrients present in water. |
| B. | Release waste substances in water. |
| C. | Take in oxygen from air. |
| D. | Take in oxygen dissolved in water. |
| E. | None of these |
| Answer» E. None of these | |
| 1493. |
Water from roots to the leaves gets transported by the: |
| A. | Phloem |
| B. | Roots |
| C. | Xylem |
| D. | Leaves |
| E. | None of these |
| Answer» D. Leaves | |
| 1494. |
Exchange of gases between the air and blood takes place across the walls of_______. |
| A. | Bronchiole |
| B. | Diaphragm |
| C. | Alveoli |
| D. | Trachea |
| E. | None of these |
| Answer» D. Trachea | |
| 1495. |
___ present on the seeds help them to be carried by the wind. |
| A. | Spines |
| B. | Thick coat of fibre |
| C. | Tiny hairs |
| D. | Hooks |
| E. | None of these |
| Answer» D. Hooks | |
| 1496. |
Which of the following seeds are dispersed by explosion of fruit? |
| A. | Balsam |
| B. | Coconut |
| C. | Cotton |
| D. | Maple |
| E. | None of these |
| Answer» B. Coconut | |
| 1497. |
Which process is responsible for the absorption of water by the roots from the soil? |
| A. | Respiration |
| B. | Photosynthesis |
| C. | Osmosis |
| D. | Transpiration |
| E. | None of these |
| Answer» D. Transpiration | |
| 1498. |
Which of the following cell organelles actively participates in aerobic respiration? |
| A. | Ribosomes |
| B. | Mitochondria |
| C. | Vacuole |
| D. | Golgi body |
| E. | None of these |
| Answer» C. Vacuole | |
| 1499. |
Seeds which have spines or hooks on them get dispersed by: |
| A. | Explosion |
| B. | Wind |
| C. | Animals |
| D. | Water |
| E. | None of these |
| Answer» D. Water | |
| 1500. |
Which of the following reproduces by vegetative propagation? |
| A. | Potato |
| B. | Onion |
| C. | Ginger |
| D. | All the above |
| E. | None of these |
| Answer» E. None of these | |