The type of glass used in making prisms and lenses is
Pyrex glass
Soft glass
Flint glass
Jena glass
- Cell membrane is
- What is the unit for measuring the pitch or frequency of sound ?
- The smallest functional and structural unit of kidney is called as
- The solar eclipse occurs when
- The formula of Plaster of Paris is
- Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?
- One fathom is equal to
- The chemial name of Uria is
- Which of the following is the lightest metal ?
- Bromine is
- Quartz crystals normally used in quartz clocks etc. is chemically
- Liquefied Petroleum gas (LPG) consists of mainly
- Which of the following elements is obtained from sea weeds ?
- The type of glass used in making prisms and lenses is
- Permanent hardness of water can be removed by adding
- Rust is
- Old-written material, which cannot be read easily can be read by
- Water has maximum density at
- Lightening cause rainfall because
- Which of the following is commonly called a polyamide ?
- Brass gets discoloured in air due to the presence of which gas in air
- The recent atomic weight scale is based on
- According to Daltons atomic theory the smallest particle which can exist independently is
- Which of the following elements is non-radioactive?
- The property of a substance to absorb moisture from the air on exposure is called
- The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
- Pollination by birds is called
- The major ingredient of leather is
- Which of the following is in liquid form at room temperature ?
- The location and energy of an electron in an atom can be specified by