Top 100 Important Everyday Science Mcqs Set-9 81- The human heart has how many chambers? A. 2B. 3C. 4D. 5 View Answer Answer : C. 4 Description 82- The time light takes from the Sun to reach Earth is: A. 8 minutes 20 secondsB. 25 minutes 20 secondsC. 45 minutes 20 secondsD. 48 minutes 20 seconds View Answer Answer : A. 8 minutes 20 seconds Description 83- Light from the Sun travels a distance before it reaches the Earth: A. 50 million km B. 100 million km C. 150 million kmD. 200 million km View Answer Answer : C. 150 million km Description 84- The most suitable thermometer for measuring the boiling point of water is: A. Mercury thermometerB. Alcohol thermometer C. Bimetallic thermometer D. None of these View Answer Answer : A. Mercury thermometer Description 85- The density of water is greatest at: A. 30°CB. 0°CC. 4°CD. None of these View Answer Answer : C. 4°C Description 86- Which one of the following statements is true? A. Gases do not conduct heat B. The best conductors are non-metals C. Conduction currents occur only in liquids D. None of the statements is true View Answer Answer : C. None of the statements is true Description 87- Ice can be changed to water by: A. Adding more water molecules B. Changing the motion of the water molecules C. Destroying the atoms in water moleculesD. Rearranging the atoms in water molecules View Answer Answer : B. Changing the motion of the water molecules Description 88- The building block of elements are called: A. AtomsB. CompoundsC. IsotopesD. None of these View Answer Answer : A. Atoms Description 89- Boiling of an egg is a change which is: A. ChemicalB. PhysiologicalC. MorphologicalD. None of these View Answer Answer : A. Chemical Description 90- The temperature of liquid Nitrogen is: A. -32°CB. -80°CC. -100°CD. -196°C View Answer Answer : D. -196°C Description 91- Which one of the following is an Alkali? A. WaterB. VinegarC. Lemon juice D. Slaked lime View Answer Answer : D. Slaked lime Description 92- If an alkali is slowly mixed into an acidic solution, the pH of the acidic solution will: A. IncreaseB. Increase to 7 and then decrease C. Decrease to 7 and then increaseD. Will remain same View Answer Answer : A. Increase Description 93- The usual raw material for ceramics, generally found beneath the top soil is: A. ClayB. SiltC. SandD. Plaster of Paris View Answer Answer : A. Clay Description 94- Polyamides are synthetic polymers commonly known as: A. NylonB. ProteinC. CelluloseD. Synthetic rubber View Answer Answer : A. Nylon Description 95- Telephone was invented in 1876 in America by: A. MarconiB. GalileoC. Graham BellD. John Beard View Answer Answer : D. Graham Bell Description 96- Information can be stored in: A. Floppy and compact discs B. Hard disks C. Audio and video cassettes D. Laser and Optical disks E. All of these four View Answer Answer : E. All of these four Description 97- Computer can: A. Add and subtract information only B. Add, subtract and sort information only C. Add, subtract, sort and classify informationD. Add and subtract but cannot sort information View Answer Answer : C. Add, subtract, sort and classify information Description 98- IBM stands for: A. International Business MachinesB. International Big Machines C. International Business Machines D. Interrelated Big Machines View Answer Answer : A. International Business Machines Description 99- Chemicals used to kill weeds are called as: A. FumigantsB. HerbicidesC. FungicidesD. Insecticides View Answer Answer : B. Herbicides Description 100- The cytoplasm consists of several types of structures, which are called: A. OrganellesB. CytochromesC. NucleusD. Protoplasm View Answer Answer : A. Organelles Description 1 2 3 4 5
