361. Which rocks are formed by the alternation of pre-existing rocks by great heat or pressure?
A: Igneous rocks
B: Sedimentary rocks
C: Metamorphic rocks
D: Acid rocks
362. The most abundant natural iron oxides are:
A: Magnetic and pyrite
B: Magnetic and Bauxite
C: Hematite and Magnetite
D: None of them
363. The two most abundant elements in seawater are:
A: Sodium and potassium
B: Sodium and Calcium
C: Sodium and chlorine
D: None of them
364. AIDS Stands for what?
A: Acquired Immune deficiency syndrome
B: Acquired Iodine deficiency syndrome
C: Acquired Immune deficiency System
D: None of the above
365. Which of the following helps in the clotting of blood?
A: Vitamin A
B: Vitamin B
C: Vitamin K
D: Vitamin D
366. Haemoglobin is due to the deficiency of?
A: Iodine
B: Iron
C: Proteins
D: Potassium
367. Blood is red due to the presence of?
A: Calcium
B: Potassium
C: Haemoglobin
D: Fats
368. Which of the following are relative terms?
A: Motion and heat
B: Heat and rest
C: Rest and motion
D: None of the above
369. How is soap prepared?
A: Mixing fats and fossils
B: Boiling fats and oils with an alkali
C: Mixing fats with chalk
D: None of the above
370. Which of the following remains liquid at ordinary temperatures and has relatively uniform expansion?
A: Water
B: Oil
C: Mercury
D: None of the above
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