Description : Mesomeric effect invloves the :
Last Answer : Mesomeric effect invloves the : A. partical displacement of electrons B. delocalization of sigma ... D. delocalization of pi and sigma electrons
Description : In an alkyl halide substitution of hydrogen by deuterium results in slow formation of ion pair. This is known as? a. Ortho effect b. Mesomeric effect c. Secondary kinetic isotope effect d. Primary kinetic isotope effect
Last Answer : c. Secondary kinetic isotope effect
Description : what is The number line shows the distance in meters of two birds, A and B, from a worm located at point X:A horizontal number line extends from negative 3 to positive 3. The point labeled as A is at negative 2.5, the point 0 is la?
Last Answer : The number line shows the distance in meters of two birds, A and B, from a worm located at point X:A horizontal number line extends from negative 3 to positive 3. The point labeled as A is at ... the two birds. (5 points)Show your work and solve for the distance using additive inverses. (5 points)
Description : Fenske equation for determining the minimum number of theoretical stages in distillation column holds good, when the (A) Relative volatility is reasonably constant (B) Mixture (to be separated) ... (to be separated) shows positive deviation from ideality (D) Multi-component distillation is involved
Last Answer : (A) Relative volatility is reasonably constant
Description : low HGB low PLT and high WBC , peripheral smear shows blast cell with large nucleus and scant cytoplasm and some nucleoli -- positive meyloperoxidase test and negative esterase , DDx: - Acute lymphocytic - Acute myelocytic - Acute monocytic
Last Answer : Acute myelocytic
Description : Iodine shows the highest oxidation state in the compound :-
Last Answer : Iodine shows the highest oxidation state in the compound :- A. `KI` B. `KI_(3)` C. `IF_(5)` D. `KIO_(4)`
Description : Black soil shows black colour due to compound
Last Answer : Ans. Mn
Description : The smallest particle of an element or a compound; which shows all the properties of that substance is known as?
Last Answer : molecule
Description : Select the compound in which chlorine shows oxidation state + 7?
Last Answer : HClO4
Description : Which is the compound in that oxygen shows + 2 oxidation state?
Last Answer : F2O
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
Description : Which of the following statements best describes a lead compound? a) A compound that contains the element lead b) A compound from the research laboratory that is chosen to go forward for preclinical and ... of a drug. d) The first compound of a structural class of compounds to reach the market.
Last Answer : c) A molecule that shows some activity or property of interest and serves as the starting point for the development of a drug.
Description : Which compound does not give a positive test in Lassaigne’s test for nitrogen? -Do You Know?
Last Answer : Azo benzene :- It has formula C12H10N2. It contains both carbon and nitrogen so it reacts with sodium. It leads to formation of sodium cyanide. It does not give positive lassaigne's test.
Description : A carbonyl compound (P) which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give an olefin (Q). Ozonolysis o
Last Answer : A carbonyl compound (P) which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give ... (S) is: A. B. C. D.
Last Answer : A carbonyl compound (P) which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration ... respectively, are: A. B. C. D.
Last Answer : A carbonyl compound (P) which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give ... (P) is: A. B. C. D.
Description : Which of the following compound is a positive allosteric modifier of the enzyme pyruvate carboxylase? (A) Biotin (B) Acetyl CoA (C) Oxaloacetate (D) ATP
Last Answer : A
Description : In the schematic diagram of the DC compound generator shown in the illustration, the positive ammeter reading is 500 amps and the negative ammeter reading is 475 amps. What is the current flow through the neutral bus? EL-0037 A. 0 amp B. 12.5 amp C. 25 amp D. 975 amp
Last Answer : Answer: C
Description : Which compound does not give a positive test in Lassaigne’s test for nitrogen?
Last Answer : Hydrazinc
Description : A compound gives a positive Tollens' test but negative Ninhydrin test. It is (a) a protein (b) an amino acid (c) a monosaccharide (d) pyridine
Last Answer : a monosaccharide
Description : The compound methylamine, H3C–NH2, contains a C–N bond. In this bond, which of the following best describes the charge on the nitrogen atom? (a) slightly positive (b) uncharged (c) slightly negative (d) –1
Last Answer : slightly negative
Description : An unknown compound gave a positive Tollens' test. Treatment of the unknown with I2/NaOH gave a solid which was identified as iodoform. The unknown was? (a) Ethanal (b) Acetone (c) Propanal (d) Acetophenone
Last Answer : Ethanal
Description : Which compound does not give a positive test in Lassaigne's test for nitrogen?