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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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