Bones Ash contain?
Bones Ash contain?
A. calcium sulphate
B. phosphoric sulphate
C. Calcium sulphate
D. None of these
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Acid rain is mainly caused by emissions of __________ in the atmosphere?
Acid rain is mainly caused by emissions of __________ in the atmosphere?A. Sulfur Dioxide and Potassium Nitrate
B. Sulfur and Charcoal
C. Nitrogen Oxide and Potassium Nitrate
D. Sulfur Dioxide and Nitrogen OxideDielectric constant of water is?
Dielectric constant of water is?A. 60
B. 70
C. 80
D. None of theseHow many milky teeth or primary teeth does a human have?
How many milky teeth or primary teeth does a human have?A. 33
B. 20
C. 15
D. 32Humans usually have 20 primary (deciduous, “baby” or “milk”) teeth and 32 permanent (adult) teeth. Most people know these teeth as baby teeth, though they are also sometimes called milk teeth or primary teeth. In all, children have 20 baby teeth – 10 on the top and 10 on the bottom. These teeth act as placeholders for the adult teeth that grow in after the baby teeth fall out.
1 light year = ?
1 light year = ?A. 9.5×106 km
B. 9.5×109 km
C. 9.5×1012 km
D. 9.5×1018 kmOne Torr is equivalent to how many mm of Mercury?
One Torr is equivalent to how many mm of Mercury?A. 1 mm
B. 10 mm
C. 100 mm
D. 0.1 mmWhat is chemical symbol for Tungsten?
What is chemical symbol for Tungsten?A. Z
B. T
C. Tn
D. WTungsten, or wolfram, is a chemical element with the symbol W and atomic number 74. The name tungsten comes from the former Swedish name for the tungstate mineral scheelite, tung sten or “heavy stone”.