List of top Questions asked in NEET (UG)

An ideal gas undergoes four different processes from the same initial state as shown in the figure below. Those processes are adiabatic, isothermal, isobaric and isochoric. The curve which represents the adiabatic process among 1, 2, 3 and 4 is:
A capacitor of capacitance C=900 pF is charged rally by 100 V battery B as shown in figure (a). Then B is disconnected from the battery and connected to another uncharged capacitor of capacitance C=900 pF as shown in figure (b). The electrostatic energy stored by the system (b)is:
From Ampere’s circuital law for a long straight wire of circular cross-section carrying a steady current, the variation of magnetic field in the inside and outside region of the wire is:
Two hollow conducting spheres of radii R1 and R2 (R1 >>R2) have equal charges. The potential would be:
Two objects of mass 10 kg and 20 kg respectively are connected to the two ends of a rigid rod of length 10 m with negligible mass. The distance of the center of mass of the system from the 10 kg mass is:
Two objects of mass 10 kg and 20 kg
The truth table for the given logic circuit is:
Given below are two statements:
Statement I: The primary CO2 acceptor in C4 plants is phosphoenolpyruvate and is found in the mesophyll cells.
Statement II: Mesophyll cells of C4 plants lack \(RuBisCO\) enzyme.
In the light of the above statements, choose the correct answer from the options given below:
Cuscuta is an example of
XO type of sex determination can be found in
Hydrocolloid carrageen is obtained from

Identify the correct set of statements:

  1. The leaflets are modified into pointed hard thorns in Citrus and Bougainvillea
  2. Axillary buds form slender and spirally coiled tendrils in cucumber and pumpkin
  3. Stem is flattened and fleshy on Opuntia and modified to perform the function of leaves
  4. Rhizophora shows vertically upward growing roots that help to get oxygen for respiration
  5. Subaerially growing stems in grasses and strawberry help in vegetative propagation

Choose the correct answer from the options given below:

Which one of the following never occurs during mitotic cell division?
Match List - I with List - II. Choose the correct answer from the options given below:
 List - I List - II
(a)Manganese(i)Activates the enzyme catalase
(b)Magnesium(ii)Required for pollen germination
(c)Boron(iii)Activates enzymes of respiration
(d)Iron(iv)Functions in splitting of water during photosynthesis
The process of translation of mRNA to proteins begins as soon as:
Which of the following is not observed during an apoplastic pathway?
The device which can remove particulate matter present in the exhaust from a thermal power plant is:
Addition of more solutes in a given solution will:

The flowers are Zygomorphic in:

  1. Mustard
  2. Gulmohar
  3. Cassia
  4. Datura
  5. Chilli

Choose the correct answer from the options given below:

“Girdling Experiment” was performed by plant physiologists to identify the plant tissue through which:

In old trees the greater part of secondary xylem is dark brown and resistant to insect attack due to:

  1. Secretion of secondary metabolites and their deposition in the lumen of vessels.
  2. Deposition of organic compounds like tannins and resins in the central layers of the stem.
  3. Deposition of suberin and aromatic substances in the outer layer of the stem.
  4. Deposition of tannins, gum, resin and aromatic substances in the peripheral layers of the stem.
  5. Presence of parenchyma cells, functionally active xylem elements and essential oils.

Choose the correct answer from the options given below:

Identify the incorrect statement related to Pollination:
Which of the following is not a method of ex situ conservation?
Given below are two statements:
Statement I: Cleistogamous flowers are invariably autogamous
Statement II: Cleistogamy is disadvantageous as there is no chance for cross pollination
In the light of the above statements, choose the correct answer from the options given below:
What amount of energy is released from glucose during lactic acid fermentation?
The gaseous plant growth regulator is used in plants to: