Venus bhatnagar science institute

For chapter 14 click here 👇👇 Chapter 14 sources of energy By vikas lodhi VENUS BHATNAGAR SCIENCE INSTITUTE INDORE                         CHAPTER - 15                  ( OUR ENVIRONMENT )  Question 1. An environment consists of: (a) Abiotic components (b) Biotic components (c) Both (d) Not certain Answer: (c) Both Question 2. Waste could be: (a) Abiotic components (b) Biotic components (c) Both (d) Not certain Answer: (c) Both Question 3. Reduction of waste is important to: (a) Make environmental balance proper. (b) Make nearby beautiful (c) waste can be transformed to useful products. (d) Not clear Answer: (d) Not clear Question 4. Which one among following is non-biodegradable substance? (a) Metal (b) Wood (c) Water (d) Urea Answer: (a) Metal Question 5. Which among the following is a biodegradable waste? (a) Wood (b) Teflon pots (c) Plastic cup (d) Glass Cups Answer: (...

For chapter 13 click here 👇👇 Chapter 13 magnetic effect of current By vikas lodhi VENUS BHATNAGAR SCIENCE INSTITUTE INDORE                             CHAPTER -  14                   (  SOURCES  OF ENERGY )  Question 1. Can we convert any form of energy to its other form? (a) Yes (b) No (c) May be Yes (d) None Answer: (a) Yes Question 2. Photosynthesis represents what kind of conversion of energy: (a) Conversion of photo-energy to chemical energy (b) Conversion of chemical energy to photo-energy (c) Conversion of physical energy to photo-energy (d) Conversion of chemical energy to electrical energy Answer: (a) Conversion of photo-energy to chemical energy Question 3. Which one of the following is good source of energy? (a) Burning wood (b) Burning cooking oil (c) Burning wax (d) Burning petroleum Answer: (d) Burning petroleum Question 4. Fuel...

For chapter 12 click here 👇👇 Chapter 12 electricity By vikas lodhi VENUS BHATNAGAR SCIENCE INSTITUTE INDORE                            CHAPTER - 13         ( MAGNETIC EFFECT OF CURRENT ) Question 1. Two magnet when come closer: (a) Attract each other (b) Repei each other (c) Sometimes attract and sometimes repel (d) No reaction Answer: (c) Sometimes attract and sometimes repel Question 2. Permanent magnet can be made by: (a) Gold (b) Carbon (c) Alnico (d) Wood Answer: (c) Alnico Question 3. When we draw magnetic field lines of any magnet it: (a) Begin from N pole and end at S pole (b) Begin from S pole and end at N pole (c) Form circles around a magnet (d) Form box around a magnet Answer: (a) Begin from N pole and end at S pole Question 4. Strongest magnetic pole around a magnet is (a) Near North pole (b) Near south pole (c) In center of magnet (d) At both poles Answer: (d) At both poles Question...

For chapter 11 click here 👇👇 Chapter 11 human eye and colorful world By vikas lodhi VENUS BHATNAGAR SCIENCE INSTITUTE INDORE                             CHAPTER  - 12                         (   ELECTRICITY  )              Question 1.   SI unit of an electric current is equal to (a) 6 × 10 8  C (b) 9.8 × 10 10  C (c) 1.6 × 10 -19  C (d) None of these Answer:   (d) None of these Question 2.   Which materials have changing resistivity? (a) Conductors (b) Semiconductors (c) Non-metals (d) Super metals Answer:   (b) Semiconductors Question 3.  If wire in a circuit is doubled its resistivity will be? (a) Two times (b) Ten times (c) Zero (d) half Answer:    (d) half Question 4. A wire used in circuit must be (a) Highly resistant (...

For chapter 10 click here 👇👇 Chapter 10 reflection and refrection of light By vikas lodhi VENUS BHATNAGAR SCIENCE INSTITUTE INDORE                            CHAPTER -  11     ( HUMAN EYES AND COLORFUL WORLD)  Question 1. When our eye see a near object, its lens? (a) Expand (b) Remain same (c) Contract (d) None Answer: (a) Expand Question 2. What transfer information from eyes to brain? (a) Neuro trans (b) Iris (c) Optical nerve (d) Retina Answer: (c) Optical nerve Question 3. What controls the size of pupil? (a) Iris (b) Cornea (c) Lens (d) Aqueous humour Answer: (a) Iris Question 4. Near point of human eye is approximately: (a) 50 cm (b) 1 m (c) 25 cm (d) 25 m Answer: (c) 25 cm Question 5. Far point of human eye is approximately: (a) 10 km (b) infinity (c) 5 km (d) 25 cm Answer: (a) 10 km Question 6. Cataract is caused mostly to (a) Farm workers (b) Factory workers (c) Kids watching TV and Mobi...

For chapter 9 click here 👇👇 Chapter 9 heredity and evolution By vikas lodhi VENUS BHATNAGAR SCIENCE INSTITUTE INDORE                         CHAPTER - 10      ( REFLECTION AND REFRECTION OF LIGHTS )  Question 1. The image formed by a convex lens is virtual, erect and larger than the object. The position of the object must be: (a) Between the lens and its focus (b) At the focus (c) At twice the focal length (d) At infinity Answer: (a) Between the lens and its focus Question 2. A real image formed by a convex lens is always: (a) On the same side of the lens as the object (b) Erect (c) Inverted (d) Smaller than the object Answer: (c) Inverted Question 3. If an object is moved towards a convex lens, the size of its image: (a) Decreases (b) Increases (c) First decreases and then increases (d) Remains the same Ans. (b) Increases Question 4. An object is placed at a distance of 30 cm from a concave mirror o...

For chapter 8 click here 👇👇 Chapter 8 how do organism reproduce By vikas lodhi VENUS BHATNAGAR SCIENCE INSTITUTE INDORE                          CHAPTER  -  9              ( HEREDITY  AND EVOLUTION )  Question 1. Fossil archaeopteryx exhibits connection between: (a) Amphibian and fish (b) Reptiles and fish (c) Reptile and birds (d) Birds and mammals Answer:  (c) Reptile and birds Question 2. The sex of the human child depends on the sex chromosome present in the: (a) Egg (b) Spenn (c) Both (a) and (b) (d) None of these Answer: (b) Spenn Question 3. Genetic information is carried out by long chain of molecules made up of: (a) Enzymes (b) DNA (c) Amino acids (d) Proteins Answer: (b) DNA Question 4. Which one of the following represents a ratio of monohybrid cross? (a) 9 : 7 (b) 3 : 1 (c) 1 : 1 : 1 : 1 (d) 9 : 3 : 3 : 1 Answer: (b) 3 : 1 Question 5. On which plant ...