Description : A gas which bleaches substances by reduction process is
Last Answer : A gas which bleaches substances by reduction process is A. `CaOCl_(2(aq))` B. `H_(2)O_(2(aq))` C. `O_(3)` D. `SO_(2(aq))`
Description : One gas bleaches the colour of flowers by reduction and other by oxidation. These gases are
Last Answer : One gas bleaches the colour of flowers by reduction and other by oxidation. These gases are A. (A) `SO_2,CI_2` ... ) `H_2S, Br_2 ` D. (D) `NH_3, SO_3`
Last Answer : One gas bleaches the colour of flowers by reduction and other by oxidation. These gases are A. CO and `CO_(2)` B. ... Cl_(2)` D. `NH_(3)` and `SO_(3)`
Description : Sulphur dioxide bleaches colouring matter by – (1) Reduction (2) Dehydration (3) Decomposition (4) Oxidation
Last Answer : (1) Reduction Explanation: Sulphur dioxide gas exhibits bleaching properties in presence of moisture. It dissolves in water liberating nascent hydrogen. Nascent hydrogen removes oxygen atoms from the colouring matter (reduces colouring matter) and it loses its colour.
Description : Sulphur dioxide bleaches colouring matter by : (1) Reduction (2) Dehydration (3) Decomposition (4) Oxidation
Last Answer : Reduction
Description : Two gases X and Y bring about bleaching of flowers. X bleaches due to oxidation of dye while Y bleaches by reducing the colouring matter. X and Y are
Last Answer : Two gases X and Y bring about bleaching of flowers. X bleaches due to oxidation of dye while Y bleaches by ... C. `SO_2, O_2` D. (4) None of these
Description : The soil which bleaches quickly due to rain, is called
Last Answer : Laterite
Description : Sulphur dioxide bleaches colouring matter by?
Last Answer : Reduction.
Description : The soil which bleaches quickly due to rain, is called- —
Description : Activated Charcoal is used to remove colouring matter from pure substances by – (1) Bleaching (2) Oxidation (3) Adsorption (4) Reduction
Last Answer : (3) Adsorption Explanation: Heating wood to a very high temperature in the absence of air makes charcoal. When it is heated to an even higher temperature, about 930°C, impurities are driven from its ... . It does so by the process of adsorption, or by attracting these molecules to the surface.
Description : 9. Montreal protocol aims at a) biodiversity conservation b) reduction of ozone depleting substances c) control of water pollution d) control of carbondioxide emission
Last Answer : a) biodiversity conservation
Description : Activated Charcoal is used to remove colouring matter from pure substances by (1) Bleaching (2) Oxidation (3) Adsorption (4) Reduction
Last Answer : Adsorption
Description : Pick out the correct statement. (A) Like internal energy and enthalpy, the absolute value of standard entropy for elementary substances is zero (B) Melting of ice involves increase in enthalpy and ... of an ideal gas depends only on its pressure (D) Maximum work is done under reversible conditions
Last Answer : (D) Maximum work is done under reversible conditions
Description : For which of the following substances, the internal energy and enthalpy are the functions of temperature only (a) any gas (b) saturated steam (c) water (d) perfect gas (e) superheated steam.
Last Answer : Answer : d
Description : For which of the following substances, the gas laws can be used with minimum error (a) dry steam (b) wet steam (c) saturated steam (d) superheated steam (e) steam at atmospheric pressure.
Description : Which one of the following best defines the word allotropes ? A Different structural forms of an element B A pair of substances that differ by H+ C Elements that possess properties intermediate between ... a specific number of neutrons E The different phases (solid, liquid or gas) of a substance
Last Answer : A Different structural forms of an element
Description : What is the name of the process where a liquid passes through a semipermeable membrane to separate it from other substances?
Last Answer : A: Filtration.
Description : The absorbed substances finally reach the tissues which utilise them for their activities. This process is called_____
Last Answer : The absorbed substances finally reach the tissues which utilise them for their activities. This process is called_____
Description : Which of the following statements is correct about the role of substances addedd in the froth floatation process?
Last Answer : Which of the following statements is correct about the role of substances addedd in the froth ... D. Froth stablisers decrease wettability of gangue.
Description : What transport process uses kinetic energy to pass substances through the plasma membrane?
Last Answer : What is the answer ?
Description : Which of the following substances, not normally present in the circulation, trigger the initiating events in the hemostatic process? a. Thrombin b. Platelet factor 3 c. Tissue factor d. Collagen
Last Answer : Answer: c, d The initiating agents for hemostasis involve two substances that are not normally present in the circulation-collagen and tissue factor. Tissue factor is released from ... phospholipid surface to form the so-called prothrombinase complex which catalyzes the formation of thrombin
Description : How does the body defend itself from microorganisms and other harmful substances that enter the airway during the breathing process?
Last Answer : The epithelium of the airway is a ciliated epithelium and has mucussecreting specialized cells. The secreted mucus covers the internal wall of the airway retaining organisms and foreign ... (sputum) and accidentally aspired objects. Breathing Process Review - Image Diversity: airway epithelium
Description : A process in which substances are separated throug differences in the rates at which the components migrate is called: w) filtration x) chromatography y) elution z) titration
Last Answer : ANSWER: X -- CHROMATOGRAPHY
Description : Substances insoluble in a membrane are carried across the membrane with the concentration gradient by means of a carrier molecule in a process known as: a) osmosis. b) diffusion. c) active transport. d) facilitated diffusion.
Last Answer : ANSWER: D -- FACILITATED DIFFUSION.