📚NCERT Questions — CBSE12
275 solved questions with detailed explanations
In the double helix structure of DNA, adenine (A) forms hydrogen bonds with which base?
Which of the following carboxylic acids is the strongest acid?
Which of the following is the general formula for most carbohydrates?
The order of reactivity of alcohols with a given haloacid (HX) is:
The formation of n-hexane when glucose is heated with HI suggests which structural feature of glucose?
Which type of protein structure involves the regular folding of the polypeptide backbone due to hydrogen bonding, forming structures like α-helix and β-pleated sheet?
Given the bond lengths: C-F (139 pm), C-Cl (178 pm), C-Br (193 pm), C-I (214 pm). Which bond would have the highest bond enthalpy?
Acetylation of glucose with acetic anhydride gives glucose pentaacetate. This reaction confirms the presence of:
Which of the following is the main storage polysaccharide of plants?
The reaction of haloalkanes with magnesium metal in dry ether produces: