Question
Mercury has become a serious toxic waste. It is
found in which of the following instruments?Solution
Mercury is a heavy silvery-white metal that is liquid at room temperatures. It is commonly used in thermometers, nano-meters and barometers, thus it is present in nearly every chemistry and physics lab. Confined in such instruments mercury itself is not likely to cause health problems, but if there is a means for mercury vapor to enter the environment, these highly toxic vapors present a health hazard.
A fluorescent lamp tube is filled with a gas containing low pressure mercury vapor and argon, xenon, neon, or krypton. Fish can absorb methyl mercury from their food and directly from water as it passes over their gills.
Which of the following statement is/are true?
I. Acids are sour in taste
II. Bases are bitter in taste
Two bodies are in SHM having the same amplitude but different frequencies. The motion of the resultant is:
The arrangement of leaves on stems or its branches is
The force which opposes the relative motion between different layers of liquid or gases is called –
A rod of length 2 m expands by 2 mm when heated. If coefficient of linear expansion is 1 x 10-5 / 0C, find temperature change.
The elements which have low value of ionization potential are strong
Specific heat of aluminum when 26000 J of energy is supplied to 4 kg block and it's temperature rises from 25°C to 35°C is
Which gas is used in the process of photosynthesis?
Which part of the plant is responsible for photosynthesis?
Who proposed the theory of relativity?
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