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Start learning 50% faster. Sign in nowAmalgam : • Alloy obtained after mixing mercury with another metal is called Amalgam. • All metals but Iron, Platinum, Tungsten and Tantalum form Amalgam with mercury. • Siver and gold amalgams are used to fill tooth cavities in dentistry. • Metallic bonds (arising out of electrostatic forces) hold the metals together in amalgam. Mercury : Mercury is a transition metal present in period 6 and group 12 of the periodic table with 80 as the atomic number. • Mercury is the only metal, which is liquid at room temperature. • When placed in a tube meniscus of mercury is convex, opposite to concave meniscus of water. • It is used in clinical thermometers because of the property of its proportional expansion with increasing temperature. • Elemental mercury is toxic to living beings and Minamata disease is associated with its consumption.
Which action taking place in the digestive system of humans is similar to the emulsifying action of soaps on dirt?
Which of the following is NOT a symptom of Amoebiasis?
Which of the following hormones regulates the basal metabolic rate (BMR) in humans?
_________ is the study of internal structure of the plants.
In roots, the protoxylem lies towards the periphery and the metaxylem towards the center. This arrangement of primary xylem is called ____________.
The yellow color of human urine is due to:
Algae and fungi belong to which plant group?
In which part of the nervous system are interneurons typically found?
In diploid organisms, which of the following undergoes meiosis ?
Match List-I with List-II :
Choose the correct answe...
