Which of the following is most likely to cause a rise in the average temperature of earth's atmosphere in future?
Atomic warfare
Depletion of earth's ozone layer
CO2 from fossil fuels
Dust clouds from valcanoes
- Bromine is
- Lightening cause rainfall because
- The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
- The colour of Emerald is
- The oxide of Nitrogen used in medicine as anaesthetic is
- The metal that is present in Photo Films is
- In an atomic nucleus, neutrons and protons are held together by
- The removal of top soil by water or wind is called
- The fastest-running terrestrial animal is
- Pollination by birds is called
- Which of the following is in liquid form at room temperature ?
- Earth's seasons are caused by which of the following?
- One fathom is equal to
- The hardest substance available on earth is
- The formula of Plaster of Paris is
- The property of a substance to absorb moisture from the air on exposure is called
- Apparatus invented by Archimedes is :
- The metal used in storage batteries
- The smallest functional and structural unit of kidney is called as
- Nitrification means
- Which of the following is commonly called a polyamide ?
- Liquefied Petroleum gas (LPG) consists of mainly
- Which of the following elements is non-radioactive?
- Polythene is industrially prepared by the polymerisation of
- What is the unit for measuring the pitch or frequency of sound ?
- Quartz crystals normally used in quartz clocks etc. is chemically
- Which of the following elements is obtained from sea weeds ?
- Brass gets discoloured in air due to the presence of which gas in air
- The most important ore of Aluminium is
- Cell membrane is