Which of the following is not an insecticide? (A) Hydrocyanic acid (B) Nicotine (C) Sodium fluoride (D) Hexane

Which of the following is not an insecticide?
(A) Hydrocyanic acid
(B) Nicotine
(C) Sodium fluoride
(D) Hexane
by

1 Answer

Answer :

(D) Hexane
by

Related questions

Hydrocyanic acid (HCN) is used as an insecticide for (A) Controlling timber degradation by ants (B) Controlling poultry lice (C) Potato beetle (D) Citrus fruits

Description : Hydrocyanic acid (HCN) is used as an insecticide for (A) Controlling timber degradation by ants (B) Controlling poultry lice (C) Potato beetle (D) Citrus fruits

Last Answer : (D) Citrus fruits

Which one of the following is natural insecticide? (a) pyrethrum (b) nicotine (c) both (a) and (b) (d) none of these

Description : Which one of the following is natural insecticide? (a) pyrethrum (b) nicotine (c) both (a) and (b) (d) none of these

Last Answer : (c) both (a) and (b)

Which one of the following is natural insecticide a) Pyrethrum b) Nicotine c) both (a) and (b) d) None of these

Description : Which one of the following is natural insecticide a) Pyrethrum b) Nicotine c) both (a) and (b) d) None of these

Last Answer : c) both (a) and (b)

Hydrocyanic acid is not shipped in (A) Cast iron vessels (B) Steel cylinders (C) Aluminium containers (D) Monel drums

Description : Hydrocyanic acid is not shipped in (A) Cast iron vessels (B) Steel cylinders (C) Aluminium containers (D) Monel drums

Last Answer : (A) Cast iron vessels

Which of the following solvents is used for the extraction of H3PO4 from CaCl2 solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching? (A) Isopropyl alcohol (B) Butyl alcohol (C) Toluene (D) Hexane

Description : Which of the following solvents is used for the extraction of H3PO4 from CaCl2 solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching? (A) Isopropyl alcohol (B) Butyl alcohol (C) Toluene (D) Hexane

Last Answer : (B) Butyl alcohol

What observations are made in reaction of hexane with concentrated sulphuric acid?

Description : What observations are made in reaction of hexane with concentrated sulphuric acid?

Last Answer : Any chemical reaction occur.

Why can sodium fluoride conduct electricity when it is molten but not solid?

Description : Why can sodium fluoride conduct electricity when it is molten but not solid?

Last Answer : In solution or when is melted sodium fluoride is dissociated in ions.

Which among the following is a covalent compound? (1) Calcium chloride (2) Magnesium fluoride (3) Sodium chloride (4) Carbon tetrachloride

Description : Which among the following is a covalent compound? (1) Calcium chloride (2) Magnesium fluoride (3) Sodium chloride (4) Carbon tetrachloride

Last Answer : (4) Carbon tetrachloride Explanation: Ionic compounds are made up of a metal and non-metal, and covalent compounds are made up of two nonmetals

A child consumes a toxic dose of fluoride. You will:** A. Induce vomiting B. Give a lot of fluids C. Give a lot of fluids and sodium bicarbonates D. Ask patient not to eat for 45 minutes E. Give milk, calcium tablets or magnesium tablets

Description : A child consumes a toxic dose of fluoride. You will:** A. Induce vomiting B. Give a lot of fluids C. Give a lot of fluids and sodium bicarbonates D. Ask patient not to eat for 45 minutes E. Give milk, calcium tablets or magnesium tablets

Last Answer : E. Give milk, calcium tablets or magnesium tablets

When the enamel of the tooth is exposed to preparation containing high concentrations of fluoride the major reaction is: M07 A. Sodium fluoride B. Calcium fluoride C. Stannous fluoride D. Fluoroapatite

Description : When the enamel of the tooth is exposed to preparation containing high concentrations of fluoride the major reaction is: M07 A. Sodium fluoride B. Calcium fluoride C. Stannous fluoride D. Fluoroapatite

Last Answer : D. Fluoroapatite

Which one of the following species contains a polar covalent bond? A oxygen B carbon dioxide C sodium chloride D magnesium fluoride E helium

Description : Which one of the following species contains a polar covalent bond? A oxygen B carbon dioxide C sodium chloride D magnesium fluoride E helium

Last Answer : B carbon dioxide

Which among the following is a covalent compound ? (1) Calcium chloride (2) Magnesium fluoride (3) Sodium chloride (4) Carbon tetrachloride

Description : Which among the following is a covalent compound ? (1) Calcium chloride (2) Magnesium fluoride (3) Sodium chloride (4) Carbon tetrachloride

Last Answer : Carbon tetrachloride

Solvent used in the deasphalting process is (A) Furfural (B) Phenol (C) Propane (D) Hexane

Description : Solvent used in the deasphalting process is (A) Furfural (B) Phenol (C) Propane (D) Hexane

Last Answer : (C) Propane

The solvent used in Barisol dewaxing process is (A) Hexane (B) Furfural (C) Benzol and ethylene dichloride (D) Methyl ethyl ketone (MEK

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

Which of the following is the most commonly used leaching solvent in vegetable oil industry? (A) Phenol (B) Hexane

Description : Which of the following is the most commonly used leaching solvent in vegetable oil industry? (A) Phenol (B) Hexane

Last Answer : (B) Hexane

Leaching of sugar from sugar beets is done by (A) Hot water (B) Hexane (C) Dilute H2SO4 (D) Lime water

Description : Leaching of sugar from sugar beets is done by (A) Hot water (B) Hexane (C) Dilute H2SO4 (D) Lime water

Last Answer : (A) Hot water

Leaching of coffee from coffee beans is done by (A) Hot water (B) Hexane (C) Lime water (D) Dilute H2SO4 (hot)

Description : Leaching of coffee from coffee beans is done by (A) Hot water (B) Hexane (C) Lime water (D) Dilute H2SO4 (hot)

Last Answer : (A) Hot water

__________ is used as an 'entrainer' for the separation of acetic acid￾water mixture by distillation. (A) Furfural (B) Benzol (C) Butyl acetate (D) Hexane

Description : __________ is used as an 'entrainer' for the separation of acetic acid￾water mixture by distillation. (A) Furfural (B) Benzol (C) Butyl acetate (D) Hexane

Last Answer : (C) Butyl acetate

Solvent used for extraction of oil is (A) Hexane (B) Methyl ethyl ketone (C) Furfural (D) None of these

Description : Solvent used for extraction of oil is (A) Hexane (B) Methyl ethyl ketone (C) Furfural (D) None of these

Last Answer : (A) Hexane

Pick out the wrong statement. (A) DDT is manufactured by the condensation of chlorobenzene with chloral at 30°C in presence of oleum, which is a highly exothermic reaction (B) Chloral is obtained by the chlorination of ethyl alcohol (C) Insecticides acting on the insects through the respiratory system are called fumigants (D) Benzene hexachloride is not a contact insecticide

Description : Pick out the wrong statement. (A) DDT is manufactured by the condensation of chlorobenzene with chloral at 30°C in presence of oleum, which is a highly exothermic reaction (B) Chloral ... through the respiratory system are called fumigants (D) Benzene hexachloride is not a contact insecticide

Last Answer : (D) Benzene hexachloride is not a contact insecticide

Dichloro diphenyl __________ is the full form of DDT (an insecticide).(A) Tetrachloroethane (B) Trichloroethane (C) Tetrachloromethane (D) Trichloromethane

Description : Dichloro diphenyl __________ is the full form of DDT (an insecticide). (A) Tetrachloroethane (B) Trichloroethane (C) Tetrachloromethane (D) Trichloromethane

Last Answer : (B) Trichloroethane

Bordeaux mixture is a/an (A) Fertiliser (B) Inorganic fungicide (C) Insecticide (D) Explosive

Description : Bordeaux mixture is a/an (A) Fertiliser (B) Inorganic fungicide (C) Insecticide (D) Explosive

Last Answer : (B) Inorganic fungicide

Chemical formula of BHC, which is an insecticide is (A) C6H6Cl6 (B) C6Cl6 (C) C6H5Cl (D) C6H4Cl2

Description : Chemical formula of BHC, which is an insecticide is (A) C6H6Cl6 (B) C6Cl6 (C) C6H5Cl (D) C6H4Cl2

Last Answer : (B) C6Cl6

What is hexane ?

Description : What is hexane ?

Last Answer : Hexane / ˈhɛkseɪn / a saturated hydrocarbon with six carbons. It is a colorless gaseous substance. It is formed only by a single bond by carbon and hydrogen. In its structure, like other hydrocarbons, each carbon forms a bond with four separate atoms. Chemical signal of hexane: C6H14 .

Catalyst used in conversion of n-hexane into benzene in:

Description : Catalyst used in conversion of n-hexane into benzene in:

Last Answer : Catalyst used in conversion of n-hexane into benzene in: A. `AlCl_(3)` B. `SiO_(2)-Al_(2)O_(3)` C. `Cr_(r)O_(3)-Al_(2)O_(3)` D. `MnO_(2)`

The reaction that give good yield of n-Hexane is :-

Description : The reaction that give good yield of n-Hexane is :-

Last Answer : The reaction that give good yield of n-Hexane is :- A. `undersetoverset(Na//"dry ether")(rarr)(CH_(3)CH_(2 ... 2)CH_(2)CH_(2)CH_(2)Cl` D. All of them

What type of reactions between hexane and bromine?

Description : What type of reactions between hexane and bromine?

Last Answer : Feel Free to Answer

Which observations are made in the reaction of hexane with bromine water?

Description : Which observations are made in the reaction of hexane with bromine water?

Last Answer : The chemical equation is:C6H14 + Br2 = C6H13Br + HBrThe product solution is colorless.

The compound that has the least value for octane number is – (1) 2-methyl heptane (2) Iso-octane (3) 2,2-dimethyl hexane (4) n-heptane

Description : The compound that has the least value for octane number is – (1) 2-methyl heptane (2) Iso-octane (3) 2,2-dimethyl hexane (4) n-heptane

Last Answer : (4) n-heptane Explanation: Octane rating or octane number is a standard measure of the performance of a motor or aviation fuel. The higher the octane number, the more compression the fuel can withstand. Isooctane (upper) has an octane rating of 100 whereas n-heptane has an octane rating of O.

Explain the effect of increasing the temperature of a liquid, on intermolecular forces operating between its particles. What will happen to the viscosity of a liquid if its temperature is increased? Arrange the following in increasing order of viscosity-water, hexane, glycerine.

Description : Explain the effect of increasing the temperature of a liquid, on intermolecular forces operating between its particles. What will happen to the viscosity of a liquid if its temperature is increased? Arrange the following in increasing order of viscosity-water, hexane, glycerine.

Last Answer : Ans. On increasing the temperature , the kinetic energy of liquid molecules increases so that it can overcome the attractive forces between the molecules and hence liquid can flow more easily i.e. viscosity decreases. Order of increasing viscosity : hexane < water < glycerine.

Benzene reacts with H2 at 150°C at 30 atm in the presence of Ni catalyst to give (a) Cyclohexane (b) Cyclohexene (c) n-Hexane (d) No reaction occurs

Description : Benzene reacts with H2 at 150°C at 30 atm in the presence of Ni catalyst to give (a) Cyclohexane (b) Cyclohexene (c) n-Hexane (d) No reaction occurs

Last Answer : Cyclohexane

An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the distance between adjacent carbon atoms is 1.39Å (intermediate between single and double bond lengths). The evidence suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Description : An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the ... suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Last Answer : Benzene

An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the distance between adjacent carbon atoms is 1.39Å (intermediate between single and double bond lengths). The evidence suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Description : An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the ... suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Last Answer : Benzene

Consider the three isomeric alkanes n-hexane, 2,3-dimethylbutane, and 2- methylpentane. Which of the following correctly lists these compounds in order of increasing boiling point? (a) 2,3-dimethylbutane < 2-methylpentane < n-hexane (b) 2-methylpentane < n-hexane < 2,3-dimethylbutane (c) 2-methylpentane < 2, 3-dimethylbutane < n-hexane (d) n-hexane < 2-methylpentane < 2,3-dimethylbutane

Description : Consider the three isomeric alkanes n-hexane, 2,3-dimethylbutane, and 2- methylpentane. Which of the following correctly lists these compounds in order of increasing boiling point? (a) 2,3-dimethylbutane < 2- ... < 2, 3-dimethylbutane < n-hexane (d) n-hexane < 2-methylpentane < 2,3-dimethylbutane

Last Answer : 2,3-dimethylbutane < 2-methylpentane < n-hexane

Which of the following compounds does not dissolve in concentrated H2SO4 on warming? (a) n-Hexane (b) Diethyl ether (c) 1-Butene (d) Aniline

Description : Which of the following compounds does not dissolve in concentrated H2SO4 on warming? (a) n-Hexane (b) Diethyl ether (c) 1-Butene (d) Aniline

Last Answer : n-Hexane

Which of the following alkanes will have the lowest boiling point? (a) n-Heptane (b) Isopentane (c) n-Hexane (d) Neopentane

Description : Which of the following alkanes will have the lowest boiling point? (a) n-Heptane (b) Isopentane (c) n-Hexane (d) Neopentane

Last Answer : Neopentane

How many isomers are possible for hexane? (a) 4 (b) 5 (c) 6 (d) 7

Description : How many isomers are possible for hexane? (a) 4 (b) 5 (c) 6 (d) 7

Last Answer : 5

Which of the following is NOT an aromatic hydrocarbon? w) naphthalene x) hexane y) styrene z) xylene

Description : Which of the following is NOT an aromatic hydrocarbon? w) naphthalene x) hexane y) styrene z) xylene

Last Answer : ANSWER: X -- HEXANE 

The compound that has the least value for octane number is : (1) 2-methyl heptane (2) Iso-octane (3) 2,2-dimethyl hexane (4) n-heptane

Description : The compound that has the least value for octane number is : (1) 2-methyl heptane (2) Iso-octane (3) 2,2-dimethyl hexane (4) n-heptane

Last Answer : n-heptane

The Refrigerant 'FREON' is – (1) Calcium Tetra Fluoride (2) Difluoro Dichloro Methane (3) Fluorspar and Felspar (4) Hydrofluosilicic Acid

Description : The Refrigerant 'FREON' is – (1) Calcium Tetra Fluoride (2) Difluoro Dichloro Methane (3) Fluorspar and Felspar (4) Hydrofluosilicic Acid

Last Answer : (2) Difluoro Dichloro Methane Explanation: Dichlorodifluorornethane (R-12), is a colourless gas, and usually sold under the brand name Freon-12, is a chlorofluorocarbon halornethane (CFC), used as a ... 1994 clue to concerns about damage to the ozone layer. It is soluble in many organic solvents.

Several applications have been suggested to increase the effectiveness of prophylactic application of topical fluoride which include all EXCEPT: A. Increase Fluoride ions in solution “increase concentration” B. Increase PH of fluoride C. Increase exposure time to topical fluoride D. Pre-treat enamel with 0.5% phosphoric acid E. Use NH4F instead of NaF

Description : Several applications have been suggested to increase the effectiveness of prophylactic application of topical fluoride which include all EXCEPT: A. Increase Fluoride ions in solution increase concentration B. Increase ... D. Pre-treat enamel with 0.5% phosphoric acid E. Use NH4F instead of NaF

Last Answer : B. Increase PH of fluoride

Several approaches have been suggested to increase the fixation of professionally applied topical fluoride, which of the following statements IS INCORRECT regarding increasing the fixation? A. Increase concentration of fluoride in solutions B. Raise the PH of the fluoride solution C. Increase the exposure time to topical fluoride D. Pre-treat the enamel with 0.5% phosphoric acid E. Use NH4F rather than NaF at a lower PH

Description : Several approaches have been suggested to increase the fixation of professionally applied topical fluoride, which of the following statements IS INCORRECT regarding increasing the fixation? A. Increase concentration of ... with 0.5% phosphoric acid E. Use NH4F rather than NaF at a lower PH

Last Answer : B. Raise the PH of the fluoride solution

Which of the following forms the weakest acid in aqueous solution? w) hydrogen fluoride x) hydrogen chloride y) hydrogen bromide z) hydrogen iodide

Description : Which of the following forms the weakest acid in aqueous solution? w) hydrogen fluoride x) hydrogen chloride y) hydrogen bromide z) hydrogen iodide

Last Answer : ANSWER: W -- HYDROGEN FLUORIDE

The Refrigerant ‘FREON' is (1) Calcium Tetra Fluoride (2) Difluoro Dichloro Methane (3) Fluorspar and Felspar (4) Hydrofluosilicic Acid

Description : The Refrigerant ‘FREON' is (1) Calcium Tetra Fluoride (2) Difluoro Dichloro Methane (3) Fluorspar and Felspar (4) Hydrofluosilicic Acid

Last Answer : Difluoro Dichloro Methane

Why are some spiders not affected by insecticide?

Description : Why are some spiders not affected by insecticide?

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Home remedies for puppy insecticide poisoning

Description : My puppy is lethargic after being out in the yard today. Yesterday we had treated the yard with insecticide. Are there any home remedies I can use to help her. We cannot afford a vet. Any suggestions would be helpful.

Last Answer : Before administering any home remedy, immediately call your Poison Control Center. The information you should give them is which poison was ingested, when it was ingested, how much, and symptoms. I would ... equal parts of white vinegar and dish soap. Works wonders and is not dangerous to animals.

Which insecticide will stop bugs eating impatiens leaves?

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can i mix insecticide and dacronil and apply in the same spraying

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is pepper water good as an insecticide?

Description : is pepper water good as an insecticide?

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Why does my grapevine smell like strong insecticide?

Description : Why does my grapevine smell like strong insecticide?

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