IIT JEE Practice Question and Answer
8Q: Simplify 413 + 215 + 414 = ? 1027 05b5cc6afe4d2b4197774d235
5b5cc6afe4d2b4197774d235- 110 47/60true
- 211 45/73false
- 311 47/36false
- 410 35/48false
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Answer : 1. "10 47/60"
Explanation :
Answer: A) 10 47/60 Explanation: The given equation is in Mixed fraction. Now to solve this type of fractions, 413 + 215 + 414 =?? = 4 + 2 + 4 + 13 + 15 + 14 ? = 10 + 4760? = 104760
Q: "The Law of Kepler" is related with which among the following ? 1027 05b5cc6bfe4d2b4197774da38
5b5cc6bfe4d2b4197774da38- 1Planetary Motiontrue
- 2Law of Conservation of energyfalse
- 3Law of Gravitationfalse
- 4Nonefalse
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Answer : 1. "Planetary Motion"
Explanation :
Answer: A) Planetary Motion Explanation: Kepler's laws of planetary motion are three scientific laws describing the motion of planets around the Sun. Kepler’s three laws of planetary motion can be stated as follows: (1) All planets move about the Sun in elliptical orbits, having the Sun as one of the foci. (2) A radius vector joining any planet to the Sun sweeps out equal areas in equal lengths of time. (3) The squares of the sidereal periods (of revolution) of the planets are directly proportional to the cubes of their mean distances from the Sun.
Q: When is 99 more than 100? 1025 05b5cc69de4d2b4197774c913
5b5cc69de4d2b4197774c913- Show Answer
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Answer :
Explanation :
A microwave. Generally when you run a microwave for '99' it runs for 1 minute and 39 seconds. '100' runs for 1 minute.
Q: What part of the atom has a positive charge? 1025 05b5cc694e4d2b4197774c4c6
5b5cc694e4d2b4197774c4c6- 1Neutronfalse
- 2Protontrue
- 3Electronfalse
- 4All the abovefalse
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Answer : 2. "Proton"
Explanation :
Answer: B) Proton Explanation: Protons carry a positive electrical charge, electrons carry a negative electrical charge and neutrons carry no electrical charge at all. The protons and neutrons cluster together in the central part of the atom, called the nucleus, and the electrons 'orbit' the nucleus.
Q: Atomic mass of first 30 elements? 1024 05b5cc632e4d2b4197774b9d5
5b5cc632e4d2b4197774b9d5- Show Answer
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Answer :
Explanation :
Here I give you the first 30 Atomic elements names and their Atomic masses. Atomic number Element Atomic mass 1 Hydrogen 1 2 Helium 4 3 Lithium 6.94 4 Beryllium 9.01 5 Boron 10.81 6 Carbon 12.01 7 Nitrogen 14.01 8 Oxygen 15.99 9 Fluorine 19.00 10 Neon 20.18 11 Sodium 22.99 12 Magnesium 25.31 13 Aluminium 26.98 14 Silicon 28.09 15 Phosphorus 30.97 16 Sulphur 32.07 17 Chlorine 35.45 18 Argon 39.95 19 Potassium 39.10 20 Calcium 40.08 21 Scandium 44.96 22 Titanium 47.87 23 Vanadium 50.94 24 Chromium 24. 52 25 Manganese 54.94 26 Iron 55.85 27 Cobalt 58.93 28 Nickel 58.69 29 Copper 63.55 30 Zinc 65.41
Q: The 'IFSC Code' is an alphanumeric code comprising 11 characters that facilitates Electronic Fund Transfer in the country. The alphabet 'F' in the abbreviation 'IFSC' stands for ? 1024 05b5cc6cbe4d2b4197774e103
5b5cc6cbe4d2b4197774e103- 1Fundfalse
- 2Fastfalse
- 3Financialtrue
- 4Firstfalse
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Answer : 3. "Financial"
Explanation :
Answer: C) Financial Explanation: IFSC stands for - Indian Financial System Code. This is a code uniquely identifies each bank branch participating in the two main Payment and settlement systems in India : 1. RTGS - The Real Time Gross Settlement (and) 2. NEFT - The National Electronic Fund Transfer (NEFT) systems.
Q: Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 5 seconds. What is the length of the fast train? 1024 05b5cc6bee4d2b4197774d97e
5b5cc6bee4d2b4197774d97e- 127 7/9 mtstrue
- 225 8/7 mtsfalse
- 321 1/4 mtsfalse
- 422 mtsfalse
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Answer : 1. "27 7/9 mts"
Explanation :
Answer: A) 27 7/9 mts Explanation: Relative speed = (40 - 20) km/hr = 20 x 5 m/sec = 50 m/sec. 18 9 Length of faster train = 50 x 5 m = 250 m = 27 7 m. 9 9 9
Q: How many laws of physics are there? 1022 05b5cc6aae4d2b4197774cf3d
5b5cc6aae4d2b4197774cf3d- 15false
- 24false
- 33true
- 42false
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Answer : 3. "3"
Explanation :
Answer: C) 3 Explanation: Physics has 5 laws. But the 3 laws of Newton has been clubbed together under one Law. Therefore there are 3 Newtons laws of Physics. They are :: 1. Newtons Laws of Motion a. First Law of Motion b. Second Law of Motion C. Third Law of Motion 2. Newtons Law of Cooling 3. Newtons Law of Gravitation.