NPCIL Trainee Science & Technology — practice questions
49 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NPCIL Trainee Science & Technology in the app →The Sanskrit text in which Acharya Kanada's atomic ideas are recorded is:The Greek word *atomos*, from which *atom* is derived, means:In which year did John Dalton propose his atomic theory based on scientific experiments?According to Dalton's atomic theory (1808):Who discovered the **electron** and in which year?In a cathode ray tube, the rays move from:Cathode rays are streams of:The charge of an electron, by convention, is:The actual magnitude of the charge of an electron in coulombs is approximately:J. J. Thomson received the Nobel Prize in Physics in:Thomson's model of the atom is also called the:In the watermelon analogy of Thomson's atomic model:The famous **gold foil experiment** was conducted in 1911 by:In the gold foil experiment, the particles aimed at the gold foil were:An alpha particle is identical to a nucleus of:Most alpha particles in the gold foil experiment:From the gold foil experiment, Rutherford concluded that the positive charge of an atom is:According to Rutherford's planetary model, electrons:The approximate diameter of an atom is:The approximate diameter of the nucleus is:If an atom were the size of a cricket ground (~100 m), the nucleus would be roughly the size of:Which scientific phenomenon, discovered in the late 19th century, demonstrated that atoms are NOT indivisible?J. J. Thomson worked at which famous laboratory in Cambridge?Why is Rutherford's atomic model called the **planetary model**?In Rutherford's atomic model, most of the mass of the atom is concentrated in:An atom is electrically neutral because:In Thomson's model, the colour of an atom (as shown in diagrams):The deflection of alpha particles from their straight path in the gold foil experiment is technically called:Consider the following types of vehicles :
I. Full battery electric vehicles
II. Hydrogen fuel cell vehicles
IConsider the following statements :
Statement I :
Some rare earth elements are used in the manufacture of flatGPS-Aided Geo Augmented Navigation (GAGAN) uses a system of ground stations to provide necessary augmentation.Which one of the following is synthesised in human body that dilates blood vessels and increases blood flow?Consider the following statements :
1. Some microorganisms can grow in environments with temperature above theWith reference to India, consider the following statements:
1. Monazite is a source of rare earths.
2. MonazitWhich one of the following is the context in which the term "qubit" is mentioned?In the context of recent advances in human reproductive technology, “Pronuclear Transfer” is used forWith reference to Visible Light Communication (VLC) technology, which of the following statements are correct?What is the importance of using Pneumococcal Conjugate Vaccines in India?
1. These vaccines are effective agaiIn India, why are some nuclear reactors kept under "IAEA Safeguards" while others are not?What is the purpose of ‘evolved Laser Interferometer Space Antenna (eLISA)’ project?In the context of the developments in Bioinformatics, the term 'transcriptome', sometimes seen in the news, reH1N1 virus is sometimes mentioned in the news with reference to which one of the following diseases?Improper handling and storage of cereal grains and oilseeds result in the production of toxins known as aflatoConsider the following statements:
If there were no phenomenon of capillarity
1. it would be difficult to use The function of heavy water in a nuclear reactor is toA company marketing food products advertises that its items do not contain trans-fats. What does this campaignThe surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. What is the reaWhat is the difference between a CFL and an LED lamp?
1. To produce light, a CFL uses mercury vapour and phospThe refractive index of a medium is defined as: