Description : Chemical name of Grignard reagent is (A) Sodium thiosulphate (B) Ethyl magnesium chloride (C) Sodium sulphite (D) Sodium bicarbonate
Last Answer : (B) Ethyl magnesium chloride
Description : The Grignard reagent, CH3CH2MgBr, can be used to prepare (a) Ethane (b) 3-Ethyl-3-pentanol (c) Propanoic acid (d) All of these
Last Answer : All of these
Description : Which of the following alcohols can be prepared by the reaction of methyl formate with excess Grignard reagent? (a) 1-pentanol (b) 2-pentanol (c) 3-pentanol (d) 2-methyl-2-pentanol
Last Answer : 3-pentanol
Description : Which reaction does not yield an ester as one of the products? (a) A carboxylic acid is heated with an alcohol (b) A Grignard reagent is added to a carboxylic acid (c) An acid halide is treated with an alcohol (d) An alkyl halide is heated with the salt of a carboxylic acid
Last Answer : A Grignard reagent is added to a carboxylic acid
Description : The useful reagent for detection of amino acids is (A) Molisch reagent (B) Dichlorophenol Indophenol (C) Ninhydrin (D) Biuret
Last Answer : Answer : C
Description : Benzoyl chloride on basic-hydrolysis (NaOH/H2O) gives : (a) Benzoic acid (b) Methyl benzoate (c) Sodium benzoate (d) Ethyl benzoate
Last Answer : Sodium benzoate
Description : What is Grignard reagent?
Last Answer : Ans. Alkyl magnesium halides
Description : Which of the following reagents will react readily with both aldehydes and ketones? (a) Grignard reagent (b) Fehling's reagent (c) Tollens' reagent (d) Schiff's reagen
Last Answer : Grignard reagent
Description : Which of the following is correct? (a) When a Grignard reagent reacts with a ketone, the addition product is a primary alcohol. (b) When a Grignard reagent reacts with a ketone, the addition product ... with a aldehyde, the addition product is a tertiary alcohol. (d) None of the above are correct.
Last Answer : None of the above are correct.
Description : Refrigerants commonly used for domestic refrigerators are (A) Ethyl chloride or methyl chloride (B) Freon-12 (C) Propane (D) NH3 or CO2
Last Answer : (A) Ethyl chloride or methyl chloride
Description : Which one of the following gases is liberated when ethyl alcohol is heated with methyl magnesium iodide?
Last Answer : Which one of the following gases is liberated when ethyl alcohol is heated with methyl magnesium ... Methane B. Ethane C. Carbondioxide D. Propane
Description : The viability of seeds is tested by (a) 2, 6 dichlorophenol indophenol (b) 2, 3, 5 triphenyl tetrazolium chloride (c) DMSO (d) Safranine.
Last Answer : b) 2, 3, 5 triphenyl tetrazolium chloride
Description : Ethyl alcohol is commonly made unfit for drinking by the addition of (a) potassium cyanide (b) methyl alcohol (c) chloroform (d) potassium chloride
Last Answer : Ans:(b)
Description : Which compound reacts most rapidly by an SN1 mechanism? (a) Methyl chloride (b) Isopropyl chloride (c) Ethyl chloride (d) tert-Butyl chloride
Last Answer : tert-Butyl chloride
Description : Which of the following compounds will react with Tollens' reagent to give metallic silver? (a) Formic acid (b) Ethyl alcohol (c) Acetic acid (d) Acetone
Last Answer : Formic acid
Description : Aspirin is chemically known as (1) methyl salicylate (2) hydroxysalicylate (3) acetylsalicylic acid (4) alkylsalicylic acid
Last Answer : acetylsalicylic acid
Description : Which of the following statements is false about the acid-strength of acetic acid? (a) Acetic acid is a stronger acid than monochloroacetic acid. (b) Acetic acid is a stronger acid than propionic acid. ... is a weaker acid than trichloroacetic acid. (d) Acetic acid is a weaker acid than formic acid
Last Answer : Acetic acid is a stronger acid than monochloroacetic acid
Description : Iso-octane is used as a reference substance in the definition of octane number and it is assigned an octane number value of 100. Iso-octane is chemically known as (A) α-methyl naphthalene (B) 2-2-4 tri methyl pentane (C) 1, 3 butadiene (D) Tetra methyl ethylene
Last Answer : (B) 2-2-4 tri methyl pentane
Description : Liquor poisoning generally occurs due to the presence of __________ in it. (A) Ethyl alcohol (B) Impurities (C) Methyl alcohol (D) Carbonic acid
Last Answer : (C) Methyl alcohol
Description : CH3CHO and C6H5CH2CHO can be distinguished chemically by (1) Fehling solution test (2) Benedict test (3) Iodoform test (4) Tollen’s reagent test
Last Answer : Iodoform test
Description : Ascorbic acid can reduce (A) 2, 4-dinitro benzene (B) 2, 6-Dichlorophenol Indophenol (C) 2, 4-dibromobenzene (D) 2, 6-dibromo benzene
Last Answer : Answer : B
Description : Ascorbic acid can reduce (A) 2, 6-Dibromobenzene (B) 2, 6-Diiodoxypyridine (C) 2, 6-Dichlorophenol indophenol (D) 2, 4-Dinitrobenzene
Description : Ascorbic acid can reduce A) 2, 4-dinitro benzene (B) 2, 6-Dichlorophenol Indophenol (C) 2, 4-dibromobenzene (D) 2, 6-dibromo benzene
Last Answer : (B) 2, 6-Dichlorophenol Indophenol
Description : During fermentation of sugar, the compound which is always formed is – (1) Methyl Alcohol (2) Ethyl Alcohol (3) Acetic Acid (4) Ethylene
Last Answer : (2) Ethyl Alcohol Explanation: Fermentation is the conversion of sugar into car-bon dioxide has (CO2) and ethyl alcohol. This process is carried out by yeast cells using a range of enzymes.
Description : Acetic acid reacts with methyl alcohol in the presence of an acid catalyst to give (a) Methyl formate (b) Ethyl formate (c) Methyl acetate (d) Ethyl acetate
Last Answer : Methyl acetate
Description : Which of the following will give acetic acid on acid-hydrolysis? (a) Ethyl acetate (b) Acetone (c) Methyl propionate (d) Lactic acid
Last Answer : Ethyl acetate
Description : During fermentation of sugar, the compound which is always formed is : (1) Methyl Alcohol (2) Ethyl Alcohol (3) Acetic Acid (4) Ethylene
Last Answer : Ethyl Alcohol
Description : Bakelite is chemically known as (A) Polyvinyl chloride (PVC) (B) Polybutadiene (C) Phenol formaldehyde (D) Polyurethane
Last Answer : (C) Phenol formaldehyde
Description : Which of the following compounds will react fastest with Lucas reagent? (a) 1-propanol (b) 2-methyl-1-propanol (c) 2-propanol (d) 2-methyl-2-propanol
Last Answer : 2-methyl-2-propanol
Description : Which of the following compounds reacts slowest with Lucas reagent at room temperature? (a) 1-butanol (b) 2-propanol (c) 2-butanol (d) 2-methyl-2-propanol
Last Answer : 1-butanol
Description : A hydrocarbon, C6H12, on ozonolysis gives only one product which does not give silver mirror with Tollens' reagent. The hydrocarbon is (a) 2,3-Dimethyl-2-butene (b) 2-Hexene (c) 2-Methyl-2-pentene (d) 3-Hexene
Last Answer : 2,3-Dimethyl-2-butene
Description : Epsom salt is chemically known as-----? A. Copper Sulfate B. Magnesium Sulfate (Answer) C. Ferrous Sulfate D. None of these
Last Answer : B. Magnesium Sulfate (Answer)
Description : Nylon-66 is a polyamide of (A) Hexamethylene diamine and adipic acid (B) Adipic acid and methyl amine (C) Vinyl chloride and formaldehyde (D) None of these
Last Answer : (A) Hexamethylene diamine and adipic acid
Description : During discharge of a lead-acid storage battery, which of the following actions occurs? A. The acid becomes stronger. B. Both plates change chemically to ammonium chloride. C. The acid becomes weaker. D. Hydrogen gas is liberated.
Last Answer : Answer: C
Description : Saw dust can be rendered chemically inert by boiling it in water containing (A) Ferrous sulphate (B) Potassium chloride (C) Ammonia (D) Nitric acid
Last Answer : Answer: Option A
Description : Which of the following is used as a solvent in deasphalting of petroleum products? (A) Furfural (B) Propane (C) Methyl ethyl ketone (D) Liquid sulphur dioxide
Last Answer : (B) Propane
Description : Straight run petrol as compared to methyl/ethyl alcohol has (A) Lower calorific value (B) Lower octane number (C) Higher specific gravity (D) Higher ignition temperature
Last Answer : (B) Lower octane number
Description : Solvent used in the Udex (glycol) extraction process for removal of light aromatics from cracked naphtha is (A) Propane (B) Diethylene glycol (C) Aqueous solution (10% water) of diethylene glycol (D) Methyl ethyl ketone (MEK)
Last Answer : (C) Aqueous solution (10% water) of diethylene glycol
Description : Solvent used in duo-sol extraction for lube oil upgradation is a mixture of (A) Propane & phenol-cresol mixture (B) Methyl ethyl ketone & glycol (C) Phenol & furfural (D) Propane & liquid sulphur dioxide
Last Answer : (A) Propane & phenol-cresol mixture
Description : Solvent deoiling process is used for separating oil and soft wax from hard wax. Methyl iso-butyl ketone and methyl ethyl ketone (MEK) are two commonly used deoiling solvents. Use of former as the deoiling solvent ... nitration temperature (C) Lower solvent dilution ratio (D) All (A), (B) & (C)
Last Answer : (D) All (A), (B) & (C)
Description : Most widely used solvent for dewaxing is (A) Methyl-ethyl-ketone (MEK) (B) Naphtha (C) Petroleum ether (D) Sodium plumbite
Last Answer : (A) Methyl-ethyl-ketone (MEK)
Description : The most suitable solvent for deasphalting vacuum residue is (A) Propane (B) Methyl ethyl ketone (C) Doctor's solution (D) Methanol amine
Last Answer : (B) Methyl ethyl ketone
Description : The solvent used in Barisol dewaxing process is (A) Hexane (B) Furfural (C) Benzol and ethylene dichloride (D) Methyl ethyl ketone (MEK
Last Answer : (C) Benzol and ethylene dichloride
Description : Solvent used for dewaxing of petroleum products are (A) Furfural (B) Methyl ethyl ketone (MEK) (C) Propane (D) Both (B) & (C
Last Answer : (C) Propane
Description : Methyl tertiary butyl ether (MTBE), a high octane (octane no. = 115) gasoline blending component is produced by the simple additive reaction of isobutylene with (A) Methyl alcohol (B) Ethyl alcohol (C) Methane (D) Ethane
Last Answer : (A) Methyl alcohol
Description : The commonly used solvent in supercritical extraction is (A) Methyl ethyl ketone (B) Water (C) Carbon tetrachloride (D) Carbon dioxide
Last Answer : (D) Carbon dioxide
Description : __________ is produced using molasses as the starting raw material. (A) Methyl alcohol (B) Ethyl alcohol (C) Benzol (D) Dimethyl ether
Last Answer : (B) Ethyl alcohol
Description : Solvent used for extraction of oil is (A) Hexane (B) Methyl ethyl ketone (C) Furfural (D) None of these
Last Answer : (A) Hexane