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You Are On Question Answer Bank SET 2334
116701. In fireworks, the green flame is produced because of?
Answer: Barium
116702. LPG consists of mainly?
Answer: Methane; butane and propane
116703. Air is a/an?
Answer: Mixture
116704. Production of chlorofluorocarbons (CFC) gas which is proposed to be banned in India, is used in which domestic product?
Answer: Refrigerator
116705. Balloons are filled with?
Answer: Helium
116706. Which metal pollute the air of a big city?
Answer: Lead
116707. Bell metal is an alloy of?
Answer: Tin and Copper
116708. Water is a good solvent of ionic salts because?
Answer: It has a high dipole moment
116709. The main constituents of pearls are?
Answer: Calcium carbonate and magnesium carbonate
116710. Amalgams are?
Answer: Alloys which contain mercury as one of the contents
116711. Potassium Permanganate is used for purifying drinking water, because?
Answer: It is an oxidising agent
116712. What is the unit for measuring the amplitude of a sound?
Answer: Decibel
116713. Reading of a barometer going down is an indication of?
Answer: Rainfall
116714. Decibel is the unit for?
Answer: Intensity of sound
116715. One fathom is equal to?
Answer: 6 feet
116716. Fathom is the unit of?
Answer: Depth
116717. Light year is a measurement of?
Answer: Stellar distances
116718. Very small time intervals are accurately measure by?
Answer: Atomic clocks
116719. One kilometre is equal to how many miles?
Answer: 0.62
116720. kilohertz is a unit which measures?
Answer: Electromagnetic radio wave frequencies
116721. One horse power is equal to?
Answer: 746 watts
116722. 'Bar' is the unit of?
Answer: Atmospheric pressure
116723. One Joule is equal to?
Answer: 107 ergs
116724. Electric current is measure by?
Answer: Ammeter
116725. A chronometer measures?
Answer: Time
116726. Nautical mile is a unit of distance used in?
Answer: Navigation
116727. Which is used as a moderator in nuclear reactor?
Answer: Graphite
116728. Atoms are composed of?
Answer: Electrons and nuclei
116729. In an atomic explosion, enormous energy is released which is due to?
Answer: Conversion of mass into energy
116730. Isotopes are separated by?
Answer: Distillation
116731. The wavelength of X-rays is of the order of?
Answer: 1 angstrom
116732. Mesons are found in?
Answer: Cosmic rays
116733. Which radioactive pollutant has recently drawn to public, due to its occurrence in the building material?
Answer: Thorium
116734. The isotope of uranium capable of sustaining chain reaction is?
Answer: U-235
116735. The age of most ancient geological formations is estimated by?
Answer: Uranium - lead method
116736. Who suggested that most of the mass of the atom is located in the nucleus?
Answer: Rutherford
116737. The dark lines in the solar spectrum are due to?
Answer: Absorption of corresponding wavelengths by the outer layers of the sun
116738. In an atomic nucleus, neutrons and protons are held together by?
Answer: Exchange forces
116739. 'No two electrons in an atom can have the same set of four quantum numbers' is?
Answer: Pauli's exclusion principle
116740. According to Avogadro's Hypothesis, the smallest particle of an element or a compound, that can exist independently, is called ____ .?
Answer: A molecule
116741. Atoms of an element differ from those of all other elements in?
Answer: Atomic number and electronic configuration
116742. How many colours the sunlight spectrum has?
Answer: Seven
116743. Which is/are the important raw material(s) required in cement industry?
Answer: Limestone and Clay
116744. Which type of fire extinguisher is used for petroleum fire?
Answer: Powder type
116745. Which is commonly called a 'polyamide'?
Answer: Nylon
116746. Epoxy resins are used as?
Answer: Adhesives
116747. Which is used for removing air bubbles from glass during its manufacture?
Answer: Arsenous oxide
116748. Wood is the main raw material for the manufacture of?
Answer: Paper
116749. Rayon is chemically?
Answer: Cellulose
116750. Optic fibres are mainly used for?
Answer: Communication
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