List of top Questions asked in NEET (UG)- 2013

Which of the following statements about the interstitial compounds is incorrect ?
Which one of the following molecules contains no π bond ?
Antiseptics and disinfectants either kill or prevent growth of microorganisms. Identify which of the following statements is not true
Among the following ethers, which one will produce methyl alcohol on treatment with hot concentrated HI?
Nylon is an example of
The structure of isobutyl group in an organic compound is
Nitrobenzene on reaction with conc. HNO3/H2SO4 at 80-100°C forms which one of the following products ?
Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating ?
6.02 × 1020 molecules of urea are present in 100 mL of its solution. The concentration of solution is
Which of the following is a polar molecule ?
Which is the monomer of Neoprene in the following ?
In the reaction Chemical Structure A is
The order of stability of the following tautomeric compounds is
Chemical structures of Carbon and Hydrogen
The radical Chemical Structure is aromatic because it has
Which of the following compounds will not undergo Friedal-Craft's reaction easily?
Select the wrong statement :
Which one of the following is not a correct statement ?
Isogamous condition with non-flagellated gametes is found in
Besides paddy fields, cyanobacteria are also found inside vegetative part of
Megasporangium is equivalent to
Read the following statements (A-E) and answer the question which follows them
(A) In liverworts, mosses, and ferns gametophytes are free-living
(B) Gymnosperms and some ferns are heterosporous
(C) Sexual reproduction in Fucus, Volvox and Albugo is oogamous
(D) The sporophyte in liverworts is more elaborate than that in mosses
(E) Both, Pinus and Marchantia are dioecious
How many of the above statements are correct ?
Among bitter gourd, mustard, brinjal, pumpkin, china rose, lupin, cucumber, sunnhemp, gram, guava, bean, chilli, plum, petunia, tomato, rose, withania, potato, onion, aloe and tulip how many plants have hypogynous flower ?
Interfascicular cambium develops from the cells of
In China rose the flowers are
Lenticels are involved in