Sets
General Science Set 53
30 questions 1. Consider the following statements about vegetative propagation:
(I) Plants raised by it can bear flowers and fruits earlier than those produced from seeds.
(II) All plants produced are genetically similar to the parent plant.
(III) It produces greater variation than sexual reproduction.
Which of the above is/are correct?
2. Heavier atoms need many more neutrons than protons because neutrons:
3. A magnesium atom (atomic number 12) loses two electrons to form Mg²⁺. The number of electrons in Mg²⁺ is:
4. Aristotle classified plants into:
5. The planetary observations from which Kepler's laws were extracted were compiled by:
6. Esters are generally:
7. Amphioxus belongs to:
8. In India, the Big Dipper is known as:
9. Which of the following is a junk food?
10. The escape speed from the surface of the Earth, in terms of g and the radius R of the Earth, is:
11. The number of electrons an oxygen atom requires to complete its octet is:
12. Which of the following plants has fibrous roots?
13. An athlete runs 80 m along a straight track and then returns 50 m along the same path. The total distance travelled and the magnitude of displacement are:
14. Which of the following is a water-in-oil emulsion?
15. Spindle-shaped, non-striated muscle cells with a single nucleus are found in the:
16. An iron rod of length 5.0 m is heated through 50 K. If αl = 1.2 × 10⁻⁵ K⁻¹, the increase in its length is:
17. One reason carbon forms strong bonds with other elements is its:
18. The protein content of Spirulina is more than ______ of its body weight.
19. Ohm's law holds for a metallic wire provided its ___ remains the same:
20. The approximate length of the DNA thread in a single human cell is: