2236. Consider the following statements in respect of a jet engine and a rocket
1.A jet engine uses the surrounding air for its oxygen supply and so is unsuitable for motion in space.
2.A rocket carries its own supply of oxygen in the gas form and fuel. Which of the above statement(s) is/are correct?
Answer : Option D |
Explanation : |
2237. Plants that are unable to synthesize their own food and are, therefore, dependent on other plants or sources are called:
1.Lithophytes
2.Parasites
3.Saprophytes
4.Symbionts Select the correct answer from the following:
Answer : Option C |
Explanation : |
2239. When a small spherical body falls in a viscous fluid, its speed increases first, then decreases and eventually it acquires a constant speed called the terminal speed. The terminal speed depends upon
Answer : Option D |
Explanation : |
2240. Which of the following type of radiation does not originate within the nucleus?
Answer : Option D |
Explanation : |
2241. A healthy freshwater fish is placed in saltwater. The expected consequence of this would be that
Answer : Option C |
Explanation : |
2242. There are twenty chromosomes in a somatic cell of maize. Compare the chromosome numbers given as follows with the organ of the maize plant.
1.Endosperm 30
2.Pollen grains 10
3.Root 30
4.Leaf 20 Which of the above pairs are correctly matched?
Answer : Option C |
Explanation : |
2244. Consider the following statements: The terminal velocity of an object falling in a viscous medium depends on
1.The coefficient of viscosity of the medium
2.The weight of the object
3.The size of the object Of these statements
Answer : Option A |
Explanation : |
2245. Consider the following food items
1.Coffee
2.Nutmeg
3.Rice
4.Sugar
5. Chocolate Which foods of the above belong to the category of aphrodisiacs
Answer : Option D |
Explanation : |
2246. The best way to maintain a natural equilibrium between the pest and predator is by using
Answer : Option D |
Explanation : |
2247. A drug that prevents infection and decay is called a/an
Answer : Option D |
Explanation : |
2248. Which planet appears to be the brightest in the night sky?
Answer : Option B |
Explanation : |
2250. The RNA molecules from a single strand of ribonucleotides of
Answer : Option C |
Explanation : |