List of top Nano Science Questions on Organic Chemistry

Enzyme inhibition
• [A.] Irreversible inhibitor increase \(V_{\max}\)
• [B.] Inhibition can regulate metabolism
• [C.] Competitive inhibitors bind active site
• [D.] Non competitive inhibitors bind allosteric site Choose the correct answer from the options given below:

Bacterial cell division by binary phase A. Cell elongation B. Chromosome replication C. New cell wall deposition D. Two daughter cells result Choose the correct answer from the options given below:

Why lipids are not considered to be a polymer or macromolecule?
• Lipids do not exist as a chain of linked monomer and they are not very big like protein, nucleic acid
• Lipids are very polar and remain in folded form
• Lipids found on surface and not fully exposed
• Lipids formed with simple molecules and they stay in globular form

Select the best explanation of Mendel's law of segregation.
• Gene Linkage
• Mutation
• Gene separation
• Allele separation

Select the activated form of oncogenes.

Identify the correct statements regarding organometallic compounds
• Organometallic compounds contain at least one direct metal-carbon bond
• Grignard reagents behave as strong nucleophiles and bases
• Organolithium compounds are generally more reactive than Grignard reagents
• Organometallic compounds are stable in the presence of moisture and air Choose the correct answer from the options given below:
• B, C & D Only
• A, B, C & D Only
• A, B & C Only
• B & C Only

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: Carbenes are highly reactive neutral species containing a divalent carbon atom with six valence electrons. Reason R: Carbenes are electron deficient species because the carbon atom does not complete its octet, making them unstable and highly reactive. In the light of the above statements, choose the most appropriate answer from the options given below
• Both A and R are correct and R is the correct explanation of A
• Both A and R are correct but R is NOT the correct explanation of A
• A is correct but R is not correct
• A is not correct but R is correct

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: Alkenes and alkynes undergo addition reaction readily. Reason R: Alkenes and alkynes undergo addition reaction because all the bonds present in them are strong \( \sigma \) (sigma) bonds. In the light of the above statements, choose the most appropriate answer from the options given below
• Both A and R are correct and R is the correct explanation of A
• Both A and R are correct but R is NOT the correct explanation of A
• A is correct but R is not correct
• A is not correct but R is correct

Arrange the following carbocations in increasing stability order \[ A.\ \mathrm{CH_3^+} \] \[ B.\ 1^\circ \] \[ C.\ 2^\circ \] \[ D.\ 3^\circ \] Choose the correct answer from the options given below:
• \( \mathrm{B < A < C < D} \)
• \( \mathrm{A < B < C < D} \)
• \( \mathrm{D < C < B < A} \)
• \( \mathrm{C < B < A < D} \)

Which two molecules have same linkage bonding in the monomers together?
• Nylon and maltose
• Nylon and protein
• Terylene and maltose
• Terylene and protein

Reaction of alkanes with halogens such as chlorine and bromine proceeds through.......