Chemistry MCQS

531. The reaction between an alkyl halide and ammonia (NH3) is an example of:
A) Substitution
(B) Addition
(C) Elimination
(D) Condensation

532. Which type of cathode is used to focus cathode rays on a platinum foil?
(A) Convex cathode
B) Concave cathode
(C) Straight cathode
(D) All of the above

533. Mass of an electron is __ times less than the mass of a proton.
(A) 1837
(B) 1838
C) 1836
(D) 1839

534. e/m for positive rays is __ e/m for a negative ray.
A) Smaller than
(B) Larger than
(C) Equal to
(D) None of the above

535. What is the name of the scientist who named cathode rays as electrons?
(A) J. Perrin
B) Stonely
(C) J.J. Thomson
(D) Rutherford

536. What is the name of the scientist who named anode rays as a proton?
(A) Stonely
(B) Thomos
(C) J. Perrin
D) Rutherford

537. Positive rays produce flashes on?
(A) Gold Plate
(B) Platinum Plate
C) Zinc Sulphide Plate
(D) Silver Plate

538. Free neutron decays into?
A) Proton and Neutrino
(B) Electron and Neutrino
(C) Electron, Proton, and Neutrino
(D) None of the above

539. Which effect do cathode rays have?
(A) Catalyzing
(B) Oxidizing
C) Reducing
(D) Hydrolyzing

540. Solution with the same osmotic pressures are called:
(A) Hypertonic
(B) Hypotonic
C) Isotonic
(D) Normal