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You Are On Question Answer Bank SET 2032
101601. Neutron (No charge) was discovered by?
Answer: James Chadwick
101602. Nucleus(+ve charge)was discovered by?
Answer: Ernest Rutherford
101603. Positron (+ve charge) was discovered by?
Answer: Carl Anderson
101604. Antineutron (No charge) was discovered by?
Answer: Bruce Cork
101605. The combining capacity of one atom to another?
Answer: Valency
101606. Atom is bigger than its nucleus?
Answer: 105 times
101607. Electrons move in a circular path called?
Answer: Orbit
101608. The maximum number of elements in an orbit is?
Answer: 2
101609. The orbit followed by a moving electrons around the nucleus of an atom?
Answer: Shell
101610. The maximum number of electrons in a shell?
Answer: 2n^2 (n = Number of shell)
101611. Smallest particle of a substance having all its properties?
Answer: Molecule
101612. The number of molecules obtained in mole of gas is called 1?
Answer: Avogadro Number
101613. Avagadro Number is?
Answer: 6.023 x 10^23
101614. The term molecule was coined by?
Answer: Avogadro
101615. International mole day is on?
Answer: October 23
101616. What is known as the bricks of Universe?
Answer: Molecules
101617. The SI Unit of the amount of substance?
Answer: Mole
101618. A molecule made up of only\one kind of atom is called?
Answer: Monoatomic molecule
101619. A molecule made up of two kinds of atom is called?
Answer: Diatomic molecule
101620. Substance which is composed of similar I' kind of atoms is called?
Answer: Elements
101621. The scientist who proved that the elements are made up of atoms?
Answer: John Dalton
101622. The term 'elements' was coined by?
Answer: Robert Boyle
101623. The first scientist who gave a definition to element is?
Answer: Robert Boyle
101624. The scientist who gave symbols for elements on the basis of their names?
Answer: John .J. Berzelius
101625. The scientist who classified elements into Metals and Non-metals is?
Answer: Lavoisier
101626. Elements are classified into?
Answer: Metals; non-metals and metalloids
101627. Elements that conduct electricity and heat which tends to lose electrons are called?
Answer: Metals
101628. Elements that do not conduct electricity and heat which tends to accept electrons?
Answer: Non-Metals
101629. Elements showing properties of both metals and non-metals are?
Answer: Metalloids
101630. The international association which gives names of elements?
Answer: International Union of Pure and Applied Chemistry (IUPAC)
101631. The headquarters of IUPAC?
Answer: Zurich (Switzerland)
101632. The most abundant element in the universe?
Answer: Hydrogen
101633. The second most abundant element in the universe?
Answer: Helium
101634. The only radio active element in liquid form?
Answer: Francium
101635. The only radio active element in gaseous form?
Answer: Radon
101636. The most electro positive stable element?
Answer: Cesium
101637. The combination of two or more elements . is called?
Answer: Compounds
101638. The separation of a compound into its elements by chemical means is called?
Answer: Analysis
101639. The formation of a compound by the union ; of elements is called?
Answer: Synthesis Examples: Water; Steam; Salt etc. .
101640. The recently discovered chemical compound for the treatment of cancer?
Answer: Cisplatin
101641. The element which forms largest number of compounds?
Answer: Carbon
101642. The second element which forms largest number of compounds?
Answer: Hydrogen
101643. Two or more substances (elements or compounds or both) that do not combine chemically during the mixing?
Answer: Mixtures
101644. The two kinds of mixtures are:?
Answer: Heterogeneous mixture and Homogeneous mixture
101645. A mixture of two faces of the matter is called?
Answer: Colloid Eg : Emulsion; Aerosols; Fog; Mt1k
101646. A colloidal solution formed between two liquids is called?
Answer: Emulsion
101647. A colloid formed between gas particles and liquid or solid particles?
Answer: Foam
101648. Colloid which contains particles of liquid or solid dispersed in gas?
Answer: Aerosol
101649. Atoms of the same element having same atomic number and different mass number are known as?
Answer: Isotopes
101650. Isotope was discovered by?
Answer: Frederick Soddy
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