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Question:- Which technology is used to squeeze water from the soaked clothes in the washing machine? A. Evaporation B. Decantation C. Centrifugation D. Sedimentation
Answer:- Ans. C Explanation: When the particles present in the fluid are so small that they crosses the pores of the filter sheet, so these particles are not separated by filter method. When these mixtures are rotated quickly, heavy particles sit down and the light particles remain above. This is centrifugation technique or we can say that Centrifugation is a technique used for the separation of particles from a solution according to their size, shape, density, viscosity of the medium and rotor speed.
Question:- Due to which process dry raisins when kept in water swell up? A. Osmosis B. Sedimentation C. Distillation D. Decantation
Answer:- Ans. A Explanation: A process by which molecules of a solvent tend to pass through a semi-permeable membrane from a less concentrated solution into a more concentrated one is known as osmosis.
Question:- Which of the following is a mixture? A. Distilled water B. Gasoline C. Both A and B D. Neither A nor B
Answer:- Ans. B Explanation: Two or more elements or compounds when mixed in any proportion so that the chemical properties of the components do not change, then it is called a mixture.
Question:- Boyles law relates to which state of matter? A. Solid state B. Liquid stage C. Gaseous state D. None of the above
Answer:- Ans. C Explanation: Boyles law, the pressure of certain quantities of gas on stable heat is inversely proportional to its volume.
Question:- Which mission of NASA brought first human to moon? A. Apollo program B. Gemini Program C. Mercury Program D. None of the above
Answer:- A
Question:- Name the first mission of NASA in which a spacecraft was reused? A. Apollo-Soyuz B. Space Shuttle C. Skylab D. None of the above
Answer:- B
Question:- How many manned space missions are launched by NASA so far? A. 160 B. 162 C. 164 D. 166
Answer:- D
Question:- Name the first Spacecraft to visit the Solar System? A. Pioneer 10 and Pioneer 11 B. Ranger 1 and Ranger 2 C. Surveyor 6 and Surveyor 7 D. Viking 1 and Viking 2
Answer:- A
Question:- What was the first manned mission of NASA? A. PQS-5 B. Apollo-Soyuz C. STS-1 D. Bell X-1
Answer:- C
Question:- Name the NASA’s first exploration mission beyond earth? A. Pioneer 2 B. Pioneer 3 C. Pioneer 4 D. Pioneer P-1
Answer:- C
Question:- When NASA had launched its first mission to Sun? A. 2016 B. 2017 C. 2018 D. None of the above
Answer:- C
Question:- What is the goal of the Surveyor Program of NASA? A. To demonstrate the proper landing on the Mars. B. To demonstrate the soft landings on the Moon. C. To check other missions of Apollo. D. To determine the radiations in Space.
Answer:- B
Question:- Name the first satellite which was launched specifically for the purpose of X-ray astronomy? A. Uhuru B. Hinode C. Clementine D. WMAP
Answer:- A
Question:- Name NASA’s Mars Exploration Rover Mission? A. Opportunity Rover B. Spirit Rover C. Sojourner Rover D. Curiosity Rover
Answer:- B