Which of the following additives/water proofing agents is added to
lower the hydrophilic (moisture loving) characteristic of cement?
(A) Xanthates
(B) Stearic acid
(C) Calcium & aluminium stearate
(D) Formic acid

1 Answer

Answer :

(C) Calcium & aluminium stearate

Related questions

Description : Hydrophilic group of a soap or detergent solution is (A) Water hating (B) Soil loving (C) Water loving (D) None of these

Last Answer : (C) Water loving

Description : Shaving soaps are (A) Soft potassium soaps (potassium salt of fatty acid) with free Stearic acid to give lather a lasting property (B) Metallic soaps compounded with frothing agents (C) High free alkali soaps having excess of cane sugar and alcohol (D) None of these

Last Answer : (A) Soft potassium soaps (potassium salt of fatty acid) with free Stearic acid to give lather a lasting property

Description : Transparent soaps (e.g. Pears) are (A) Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency (B) ... (C) Metallic soaps with frothing agent from which glycerine has not been recovered (D) None of these

Last Answer : (A) Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency

Description : Elastomers are:** A. Hydrophilic B. Hydrophobic C. Water-loving impression material D. Potassium alginates E. None of the above

Last Answer : B. Hydrophobic

Description : . Bromine is used in the preparation. of (A) Fire extinguishing compounds (B) Fire proofing agents (C) Dyes and antiknock compounds (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Description : Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser? (A) Ethylene glycol (B) Stearic acid estors (C) Tricresyl phosphate (D) Esters of phthalic acid

Last Answer : (A) Ethylene glycol

Description : Which of the following additives are added to plastics to make it impervious to X-rays? (A) Asbestos (B) Barium salt (C) Carborundum (D) Phthalic acid

Last Answer : (B) Barium salt

Description : In 3rd generation dentin bonding agents, HEMA (Hydroxyethylmethacrylate) is 1. a hydrophilic monomer that wets the dentinal surface 2. a hydrophilic resin that forms a hybrid layer by chemically reacting the intertubular dentin. 3. a hydrophilic ... a. 1,2 b. 1,4 c. 2,3 d. 1,3 e. 3,4

Last Answer : b. 1,4

Description : What is the sign of calcium stearate ?

Last Answer : Its signal is ( R-COO) 2Ca

Description : Sting of ant can be cured by rubbing the affected area with soap because (a) it contains oxalic acid which neutralises the effect of formic acid (b) it contains aluminium hydroxide which neutralises ... (c) it contains sodium hydroxide which neutralises the effect of formic acid (d) none of these

Last Answer : (c) it contains sodium hydroxide which neutralises the effect of formic acid

Description : Distemper is (A) A paint consisting of powdered chalk, pigments and water (B) A water proofing agent (C) A paint consisting of coloured cement and water (D) A drying agent

Last Answer : Answer: Option A

Description : Plastic asphalt is (A) Used as a water proofing layer over roof (B) A mixture of cement and asphalt (C) A natural asphalt (D) A refinery produ

Last Answer : Answer: Option B

Description : Xanthates are used in the froth floatation process as a/an (A) Conditioner (B) Frother (C) Collector (D) Activator

Last Answer : (C) Collector

Description : Pick up the incorrect statement from the following: (A) Horizontal D.P.C. is provided at plinth level in internal walls (B) D.P.C. is provided under door and verandah openings (C) Vertical D.P.C. is not provided in internal walls (D) Cement concrete is a rigid damp-proofing material

Last Answer : Answer: Option B

Description : Both stearic acid and linoleic acid have 18 carbons. Linoleic acid is unsaturated, while stearic acid is saturated. The melting point of stearic acid : (a) is higher than linoleic acid (b) is lower than linoleic acid (c) is same as linoleic acid (d) can not predict, insufficient information

Last Answer : is higher than linoleic acid

Description : (3) preventing rapid setting of cement Explanation: Portland cement clinker is a hydraulic material which shall consist of at least two-thirds by mass of calcium silicates, the remainder consisting of ... mixed with water by way of a complex series of chemical reactions still only partly understood.

Last Answer : Milk is a colloidal system in which: (1) Water is dispersed in fat (2) Fat is dispersed in water (3) Fat and water are dispersed in each other (4) Fat is dissolved

Description : Which one of the following is correct? Formic acid has lower `pK_(a)` than that of `CH_(3)COOH` because:

Last Answer : Which one of the following is correct? Formic acid has lower `pK_(a)` than that of `CH_(3) ... acetic acid D. formic acid is a strong reducing agent

Description : Synthetic detergents are made from – (1) Sodium stearate (2) Sodium salt of benzene sulphonic acid (3) Sodium salt of benzene carboxylic acid (4) Sodium palmitate

Last Answer : (2) Sodium salt of benzene sulphonic acid Explanation: Synthetic detergents are made from sodium salt of benezene sulphonic acid.

Description : Synthetic detergents are made from (1) Sodium stearate (2) Sodium salt of benzene sulphonic acid (3) Sodium salt of benzene carboxylic acid (4) Sodium palmitate

Last Answer : Sodium salt of benzene sulphonic acid

Description : In which one of the following pairs is the specific characteristic of a soil not correctly matched? (a) Laterite – Contains aluminium compound (b) Terra rosa – Most suitable for roses (c) Chernozems – Richest soil in the world (d) Black soil – Rich in calcium carbonate

Last Answer : (d) Black soil – Rich in calcium carbonate

Description : __________ is the most suitable lubricant for drawing mild steel wires? (A) Kerosene (B) Water (C) Sodium stearate (D) Lime water

Last Answer : (C) Sodium stearate

Description : Which one of the following is not likely to be a constituent of vegetable oils? (A) Citric acid (B) Oleic acid (C) Stearic acid (D) Glycerol

Last Answer : (A) Citric acid

Description : Which of the following is an unsaturated fatty acid? (A) Lauric acid (B) Palmitic acid (C) Stearic acid (D) Oleic acid

Last Answer : (D) Oleic acid

Description : __________ acid is an unsaturated fatty acid. (A) Palmitic (B) Oleic (C) Stearic (D) Oxalic

Last Answer : (B) Oleic

Description : Which of the following additives improves the cetane number of diesel? (A) Amyl nitrate (B) Ethyl mercaptan (C) Naphthenic acid (D) Tetra ethyl lead

Last Answer : (B) Ethyl mercaptan

Description : Additives used for promoting the flocculation of particles is a/an (A) Electrolyte (B) Surface active agent (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

Description : In linguistic morphology _____________ is the process for reducing inflected words to their root form. a) Rooting b) Stemming c) Text-Proofing d) Both Rooting & Stemming

Last Answer : b) Stemming

Description : Metallic soap is __________ salt of fatty acids. (A) Sodium (B) Potassium (C) Both sodium & potassium (D) Aluminium or calcium

Last Answer : (D) Aluminium or calcium

Description : What is the sign of Sodium Stearate ?

Last Answer : : The signal for sodium stearate is C17 H35 COONa.

Description : Hepatitits with cholestatic jaundice occurs most frequently as an adverse reaction to the following preparation of erythromycin (a) Erythromycin base (b) Erythromycin stearate (c) Erythromycin estolate (d) Erythromycin ethylsuccinate

Last Answer : Ans: C

Description : Hepatitis with cholestatic jaundice occurs most frequently as an adverse reaction to the following preparation of erythromycin: A. Erythromycin base B. Erythromycin stearate C. Erythromycin estolate D. Erythromycin ethylsuccinate

Last Answer : C. Erythromycin estolate

Description : (4) sodium chloride contains hygroscopic impurities like magnesium chloride Explanation: Table salt is refined salt, which contains about 97 to 99 percent sodium chloride. It usually contains substances that ... of salt it become wet in rainy season as the salt absorbs moisture from environment.

Last Answer : Which of the following could be used as fuel in propellant or rockets? (1) Liquid Hydrogen + Liquid Nitrogen (2) Liquid Oxygen + Liquid Argon (3) Liquid Nitrogen + Liquid Oxygen (4) Liquid Hydrogen + Liquid Oxygen

Description : Saponification involves the hydrolysis of fats and oils by- (1) water (2) washing soda (3) stearic acid (4) caustic soda

Last Answer : (4) caustic soda Explanation: Caustic soda (sodium hydroxide) is a versatile alkali. Its main uses are in the manufacture of pulp and paper, alumina, soap and detergents, petroleum products and chemical production.

Description : An amino acid having a hydrophilic side chain is (A) Alanine (B) Proline (C) Methionine (D) Serine

Last Answer : Answer : D

Description : Finely ground calcium aluminate & silicate is a/an (A) Cermet (B) Cement (C) Abrasive (D) Explosive

Last Answer : (B) Cement

Description : What are the chemical signals of stearic acid ?

Last Answer : : Chemical signal of stearic acid C17H35COOH

Description : Is paraffin wax stronger that stearic acid?

Last Answer : Need answer

Description : A fatty acid which is not synthesized in human body and has to be supplied in the diet is (A) Palmitic acid (B) Oleic acid (C) Linoleic acid (D) Stearic acid

Last Answer : Answer : C

Description : A fatty acid not synthesized in man is (A) Oleic (B) Palmitic (C) Linoleic (D) Stearic

Last Answer : Answer : C

Description : A fatty acid which is not synthesized in human body and has to be supplied in the diet: (A) Palmitic acid (B) Oleic acid (C) Linoleic acid (D) Stearic acid

Last Answer : Answer : C

Description : Which of the following is a hydroxy fatty acid? (A) Oleic acid (B) Ricinoleic acid (C) Caproic acid (D) Stearic acid

Last Answer : Answer : B

Description : Which of the following is not an unsaturated fatty acid? (A) Oleic acid (B) Stearic acid (C) Linaoleic acid (D) Palmitic acid

Last Answer : Answer : B

Description : Prostaglandins are synthesized in the body from (A) Myristic acid (B) Arachidonic acid (C) Stearic acid (D) Lignoceric acid

Last Answer : Answer : D

Description : Net ATP generation on complete oxidation of stearic acid is (A) 129 (B) 131 (C) 146 (D) 148

Last Answer : Answer : C

Description : All the following have 18 carbon atoms except (A) Linoleic acid (B) Linolenic acid (C) Arachidonic acid (D) Stearic acid

Last Answer : Answer : C

Description : Palmitic, oleic or stearic acid ester of cholesterol used in manufacture of cosmetic creams is (A) Elaidic oil (B) Lanoline (C) Spermaceti (D) Chaulmoogric oil FATS AND FATTY ACID METABOLISM 75

Last Answer : Answer : B

Description : In humans, a dietary essential fatty acid is (A) Palmitic acid (B) Stearic acid (C) Oleic acid (D) Linoleic acid

Last Answer : Answer : D

Description : Candle is a mixture of – (1) Paraffin wax and stearic acid (2) Bees wax and stearic acid (3) Higher fat acids and stearic acid (4) Bees wax and paraffin wax

Last Answer : (1) Paraffin wax and stearic acid Explanation: The candle can be made of paraffin (a byproduct of petroleum refining), microoystalline wax, stearin (now produced almost exclusively from palm waxes ... affordable and cheap wax alternatives) or spermaceti (extracted from the head of a Sperm Whale).

Description : The formula of Stearic acid is

Last Answer : C 17 H 35 COOH

Description : Why is Stearic acid a saturated fatty acid?

Last Answer : Stearic acid does not contain double bonds in its carbon atom hence it is a saturated fatty acid.