List of top Questions asked in NEET (UG)- 2012

The dimension of $\left(\mu_{0} \in_{0}\right)^{-1 / 2}$ are :
A solid cylinder of mass $3\, kg$ is rolling on a horizontal surface with velocity $4\, ms^{-1}$. It collides with a horizontal spring of force constant $200\, N\, m^{-1}$. The maximum compression produced in the spring will be
Standard enthalpy of vapourisation $\Delta_{\text {vap }} H ^{\Theta}$ for water at $100^{\circ} C$ is $40.66\, kJ\, mol ^{-1}$. The internal energy of vaporisation of water at $100^{\circ} C$ (in $kJmol ^{-1}$) is : (Assume water vapour to behave like an ideal gas)
A $200\, W$ sodium street lamp emits yellow light of wavelength $0.6 \, \mu m. $ Assuming it to be $25 \% $ efficient in converting electrical energy to light, the number of photons of yellow light it emits per second is
Which one of the following statements regarding photochemical smog is not correct?
Common cold differs from pneumonia in that Pneumonia
A car of mass $1000 \,kg$ negotiates a banked curve of radius $90\,m$ on a frictionless road. If the banking angle is $45^{\circ}$, the speed of the car is
Limiting molar conductivity of $NH_4OH $ $[i.e. \,\wedge^\circ {m (NH_4OH)}]$ is equal to
Two similar coils of radius $R$ are lying concentrically with their planes at right angles to each other. The currents flowing in them are $I$ and $2I$, respectively. The resultant magnetic field induction at the centre will be
Which one of the following is not a gaseous biogeochemical cycle in ecosystem?
Gymnosperms are also called soft wood spermatophytes because they lack
How many organisms in the list given below are autotrophs ? Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter Streptomyces, Saccharomyces, Trypanosoma, Porphyra, Wolffia
Select the correct statement about biodiversity
Cymose inflorescence is present in
Vexillary aestivation is characteristic of the family
The highest number of species in the world is represented by
Which is not a functional unit of an ecosystem
Which one of the following pairs is wrongly matched ?
The gynoecium consists of many free pistils in flowers of
Vernalization stimulates flowering in
How many plants in the list given below belongs to the Fabaceae family? Mustard, Gram, Tulip, Asparagus, Arhar, Sun hemp, Chilli, Colchicine, Onion, Moong, Pea, Tobacco, Lupin, Trifolium, Sesbania
When $Cl_2$ gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from
Aluminium is extracted from alumina $(Al_2O_3)$ by electrolysis of a molten mixture of
Two spheres $A$ and $B$ of masses $m_1$ and $m_2$ respectively collide. $A$ is at rest initially and $B$ is moving with velocity $v/2$ along x-axis. After collision $B$ has a velocity in a direction perpendicular to the original direction. The mass $A$ moves after collision in the direction
Which of the statements is not true?