Description : Selective herbicide under cotton + black gram intercropping system a). Diuron b). Oxadiazon c). Fluchloralin d). All
Last Answer : b). Oxadiazon
Description : . Herbicide effectively controls Saccharum and Sorghum halepense only at pre flowering stage a). Diuron b). Atrazine c). Amitrole d). Both a and c
Last Answer : d). Both a and c
Description : A herbicide both soil and foliage active a). 2,4-D b). Isoproturon c). Diuron d). All of these
Last Answer : d). All of these
Description : Which herbicide is used in aquatic weed control? a). Acrolein b). Delapon c). Diuron d). Picloram
Last Answer : a). Acrolein
Description : Which herbicide is systemic and translocated type ? a). Atrazine b). Diuron c). Paraquat d). Glyphosate
Last Answer : d). Glyphosate
Description : Which of the following statements regarding IL-1 are correct? a. While IL-1 and TNFa share many biologic effects, IL-1 appears to be more potent b. IL-1 expression is in part ... production d. The ability of IL-1 to upregulate endothelial cell-neutrophil adhesion molecules is relatively limited
Last Answer : Answer: b IL-1 and TNFa share many biologic properties. In addition, each potentiates the effects of the other one when given concurrently. Overall, IL-1 alone probably has weaker effects than ... IL-1 provides a key step in the extravasation of leukocytes to sites of local inflammation and injury
Description : Compared to older tetracyclines, doxycycline produces a lower incidence of superinfection diarrhoea because (a) It is completely absorbed in the small intestines so that drug concentration in the colonic ... (d) It is a potent tetracycline and inhibits the superinfection causing microbes as well
Last Answer : Ans: A
Description : Compared to older tetracyclines, doxycycline produces a lower incidence of superinfection diarrhoea because: A. It is completely absorbed in the small intestines so that drug concentration in the colonic contents ... the microbes of the normal gut flora D. It is a potent tetracycline and inhibits
Last Answer : A. It is completely absorbed in the small intestines so that drug concentration in the colonic contents is low
Description : Sulbactam differs from clavulanic acid in that: A. It is not a progressive inhibitor of β-lactamase B. It does not inhibit β-lactamase produced by gram negative bacilli C. It is quantitatively more potent D. It per se inhibits N.gonorrhoeae
Last Answer : D. It per se inhibits N.gonorrhoeae
Description : A very potent herbicide for the control of perennial, broad-leaved weed and brushes a). Atrazine b). 2,4-D c). Picloram d). Amitrole
Last Answer : c). Picloram
Description : What is DCMU
Last Answer : DCMU A. Inhibits PS-1 B. Inhibites PS-II C. Destroys chloroplast D. Inhibits oxidative phosphorylation
Description : Commonly used algicide a). Copper sulphate pentahydrate b). Simazine c). Diuron d). All
Last Answer : d). All
Description : Herbicidal control of pre-established thatch grass (Imperata cylindrical) con trol in tea orchard a). Glyphosate + 2,4-D b). Oxyflourfen + 2,4-D c). Diuron + 2,4-D d). Paraquat + 2,4-D
Last Answer : a). Glyphosate + 2,4-D
Description : Epinasty of cotton is used to measure qualitative assay of a). Atrazine b). 2,4-D c). Diuron d). Alachlor
Last Answer : b). 2,4-D
Description : Consider the following statements: 1. Methyl alcohol is added to denature ethyl alcohol. 2. Ethyl alcohol is also called grain alcohol. 3. Ethyl alcohol and dimethyl ether are isomers. 4. Swine flu is a viral disease, The correct ... ) 1, 3 and 4 only (c) 1, 2, 3 and 4 (d) 1, 2 and 3 only
Last Answer : Ans:(c)
Description : Compound A reacts with Na metal to give B. A also reacts with `PCl_(5)` to give C. B and C reacts with each other to give dimethyl ether. Then A, B an
Last Answer : Compound A reacts with Na metal to give B. A also reacts with `PCl_(5)` to give C. B and C reacts with each ... )Cl` D. `CH_(3)Cl, CH_(4), CH_(3)OH`
Description : The hormone somatostatin is resposible for inhibiting the motility and absobtion in the digestive tract. It also inhibits the release of insuline and
Last Answer : The hormone somatostatin is resposible for inhibiting the motility and absobtion in the digestive tract. It also ... Alph B. Beta C. Delta D. F cells
Description : CONDENSED STRUCTURE OF THE FOLLOWING1. 5,5 – diethyl – 3,3 – dimethyl – 1 - octyne2. 2,4,4,6 – tetraethyl – 3,3 – nondiene3. 1,1,4,4 – tetramethylheptaneIDENTIFY IF ITS ALKANE ALKYNE ALKENE?
Last Answer : ℤ.
Last Answer : Chemical signals of dimethyl ether CH3-O-CH3
Description : Aniline when diazotized in cold and then treated with dimethyl aniline gives a coloured product. Its structure would be
Last Answer : Aniline when diazotized in cold and then treated with dimethyl aniline gives a coloured product. Its structure would be A. B. C. D.
Description : Which of the following combination of axial & equitorial bonds show Cis or Trans orientation in Dimethyl cyclohexane. (i) 1e, 2e (ii) 1e, 3e (iii) 1e,
Last Answer : Which of the following combination of axial & equitorial bonds show Cis or Trans orientation in Dimethyl cyclohexane. ... 3a (vi) 1e, 4a (vii) 1a, 3a
Description : Dimethyl glyoxime forms a square planard complex with `Ni^(2+)`. This complex should be
Last Answer : Dimethyl glyoxime forms a square planard complex with `Ni^(2+)`. This complex should ... paramagnetic having 2 unpaired electrons D. ferromagnetic .
Description : The effect that makes 2,3-dimethyl-2-butene more stable than 2-butene is :
Last Answer : The effect that makes 2,3-dimethyl-2-butene more stable than 2-butene is : A. hyperconjugation B. reseonce C. steric effect D. inductive effect
Description : If the boiling point of ethanol (molecular weight `= 46`) is `78^@ C`, the boiling point of dimethyl ether (molecular weight `= 46`) is
Last Answer : If the boiling point of ethanol (molecular weight `= 46`) is `78^@ C`, the boiling point of dimethyl ether (molecular ... ` C. `86^(@)C` D. `34^(@)C`
Description : 3, 3-Dimethyl-2-butanol no reaction with HCl yield mainly
Last Answer : 3, 3-Dimethyl-2-butanol no reaction with HCl yield mainly A. 2-Chloro-2, 3-dimethyl butane B. ... -3, 3-dimethylbutane D. 1-Chloro-3, 3-dimethylbutane
Description : 2, 4-Dimethyl pentan -3-ol is a
Last Answer : 2, 4-Dimethyl pentan -3-ol is a A. primary alcohol B. secondary alcohol C. tertiary alcohol D. dihydric alcohol
Description : Mutations can be caused by (A) Nitrosamine (B) Dimethyl sulphate (C) Acridine (D) All of these
Last Answer : Answer : D
Description : Reduction of D-ribonucleotides to D-deoxy ribonucleotides in prokaryotes requires (A) 5, 6 dimethyl benzimindazole cobamide (B) Thiredoxin (C) Tetra hydrobiopterin (D) Tetra hydrofolate VITAMINS 131
Last Answer : Answer : A
Description : Reduction of D-ribonucleotides to Ddeoxy ribonucleotides in prokaryotes requires (A) 5, 6 dimethyl benzimidazole cobamide (B) Thioredoxin (C) Tetra hydrobiopterin (D) Tetra hydrofolate
Last Answer : Answer : B
Description : Erythromycin contains (A) Dimethyl amino sugar (B) Trimethyl amino sugar (C) Sterol and sugar (D) Glycerol and sugar
Last Answer : A
Description : The compounds responsible for causing “socks” to stink are 1. Butyric acid 2. Dimethyl sulphide 3. 2-Heptanone 4. 2-Nonanone 5. 2-Octanone Which compound(s) is/are present in the “socks stink”? (a) 1, 2, 3, 4 and 5 (b) 1, 3, 4 and 5 (c) 1, 2, 3 and 5 (d) 1, 4 and 5
Last Answer : Ans:(a)
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.
Description : Which among the following is used in making liquors, medicines and as a fuel in aircrafts? (1) Propyl alcohol (2) Dimethyl alcohol (3) Ethyl alcohol (4) Methyl alcohol
Last Answer : (3) Ethyl alcohol Explanation: Ethyl alcohol (C2H5), also known as ethanol, is a member of a class of organic compounds that are given the general name alcohols.
Description : Nylon-66 is manufactured from (A) Adipic acid and Hexamethylene diamine (B) Caprolactam (C) Maleic anhydride and Hexamethylene diamine (D) Dimethyl terephthalate (DMT) and ethylene glycol
Last Answer : (A) Adipic acid and Hexamethylene diamine
Description : Dacron is a (A) Condensation polymerisation product of Hexamethylene diamine and adipic acid (B) Condensation polymerisation product of dimethyl terephthalate (DMT) and ethylene glycol (C) Thermosetting material (D) None of these
Last Answer : (D) None of these
Description : Reaction of dimethyl terephthalate (DMT) and ethylene glycol produces (A) Nylon-6 (B) Dacron (C) Polyester (D) PVC
Last Answer : (B) Dacron
Description : Which of the following has highest boiling point and why?(L-II) (a) 2 methylpentane (b) 2,3 dimethyl butane (c) 2,2 dimythylbutane
Last Answer : Ans. As the branching increases, surface area decreases. As a result, magnitude of Vander Waals forces of attraction decreases and hence the boiling point decreases. Thus, the overall order of decreasing boiling point is: 2 methylpentane (333k) > 2,3 dimethylbutane (331k) > 2,2 dimethylbutane(323k)
Description : (a) What effect the branching of an alkane has on its melting point? (L-III) (b) Which of the following has highest boiling point?(L-III) (1) 2-methyl pentane. (2) 2, 3-diethyl butane. (3) 2, 2- dimethyl butane.
Last Answer : Ans.(a) In general conception, as the branching increases packing of the molecules in the crystals becomes less close and have melting point decreases accordingly. (b) As the branching increases, ... attraction decreases and hence the boiling point decreases. So, 2-methyl pentane has highest B.pt.
Description : Prominent foul smell of Karnal bunt is due to (A) Trienthyl amine (B) Trimethyl amine (C) Dimethyl amine (D) None
Last Answer : (B) Trimethyl amine
Description : Ethylene glycol reacts with dimethyl terephthalate to form (a) Nylon-6,6 (b) Teflon (c) Dacron (d) Orlon
Last Answer : Dacron
Description : Bakelite is obtained from : (a) Phenol and formaldehyde (b) Adipic acid and hexamethylene diamine (c) Dimethyl terephthalate and ethylene glycol (d) Neoprene
Last Answer : Phenol and formaldehyde
Description : What is the IUPAC name for isoprene? (a) 1,3-pentadiene (b) 2,4-pentadiene (c) 2,3-dimethyl-1, 3-butadiene (d) 2-methyl-1,3-butadiene
Last Answer : 2-methyl-1,3-butadiene
Description : When ethyl acetoacetate is subjected to ketonic hydrolysis, the ketone obtained is (a) Dimethyl ketone (b) Methyl ethyl ketone (c) Diethyl ketone (d) Methyl n-propyl ketone
Last Answer : Diethyl ketone
Description : Which of the following would have the highest boiling point? (a) Dimethyl ether (b) Diethyl ether (c) Ethyl methyl ether (d) Diisopropyl ether
Last Answer : Diisopropyl ether
Description : Ethyl bromide reacts with sodium methoxide to form (a) Diethyl ether (b) Ethyl methyl ether (c) Dimethyl ether (d) n-Propyl alcohol
Last Answer : Ethyl methyl ether
Description : Ethanol is isomeric with (a) Dimethyl ether (b) Ethanal (c) Diethyl ether (d) Propanone
Last Answer : Dimethyl ether
Description : Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces (A) Nylon-6 (B) Dacron (C) Polyester (D) PVC
Description : Which of the following compounds have planar molecules? (a) 1,3-Butadiene (b) Dimethyl ether (c) 1-Butene (d) Allene
Last Answer : 1,3-Butadiene
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