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Amalgam : • 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 of the following rivers of Uttar Pradesh has been declared as 'Biological Disaster' due to Environmental Pollution?
Ayodhya is situated near which of the following river in uttar Pradesh?
Army Kharga Corps and the Air Force have conducted joint exercise "Gagan Strikers" a four day long exercise was held in the state of?
Which type of waves are light waves?
__________ is the largest freshwater lake in Haryana.
The Government of India has added _____ number of new Ramsar Sites as declared by the Union Minister of Environment, Forest and Climate Change, Bhupende...
Gross Enrolment Ratio (GER) in higher education in India is _______ per cent for 2019-20 according to the All India Survey on Higher Education (AISHE) ...
Mirabai Chanu has won a Gold Medal for India in weightlifting under _____ weight category?
Silent Valley National Park is located in which Indian state?
What is the name of India’s third lunar mission?