List of top Questions asked in NEET (UG)

A spherical black body with a radius of $12\,cm$ radiates $450\,watt$ power at $500\,K$. If the radius were halved and the temperature doubled, the power radiated in watt would be :

A spring of force constant $k$ is cut into lengths of ratio $1 : 2 : 3$. They are connected in series and the new force constant is $k'$. Then they are connected in parallel and force constant is $k"$ . Then $k' : k''$ is :

A thin prism having refracting angle $10^{\circ}$ is made of glass of refractive index $1.42$. This prism is combined with another thin prism of glass of refractive index $1.7$. This combination produces dispersion without deviation. The refracting angle of second prism should be :

Alexander Von Humbolt described for the first time:

An important characteristic that Hemichordates share with Chordates is :

Anaphase Promoting Complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur ?

Artificial selection to obtain cows yielding higher milk output represents :

Asymptote in a logistic growth curve is obtained when :

Capacitation occurs in

Concentration of the $Ag^+$ ions in a saturated solution of $Ag_2C_2O_4$ is $2.2 \times 10^{-4}\, mol\, L^{-1}$ Solubility product of $Ag_2C_2O_4$ is :-

Correct increasing order for the wavelengths of absorption in the visible region the complexes of $Co^{3+}$ is :

DNA replication in bacteria occurs:

Double fertilization is exhibited by :

The correct increasing order of basic strength for the following compounds is

Extraction of gold and silver involes leaching with $CN^-$ ion. Silver is later recovered by :-

For a given reaction, $\Delta H =35.5\, kJ\, mol ^{-1}$ and $\Delta S =83.6\, JK ^{-1}\, mol ^{-1} .$ The reaction is spontaneous at $:$ (Assume that $\Delta H$ and $\Delta S$ do not vary with temperature)

Fruit and leaf drop at early stages can be prevented by the application of:

Good vision depends on adequate intake of carotene rich food : Select the best option from the following statements : (a) Vitamin A derivatives are formed from carotene (b) The photopigments are embedded in the membrane discs of the inner segment (c) Retinal is a derivative of Vitamin A (d) Retinal is a light absorbing part of all the visual photopigments

Homozygous purelines in cattle can be obtained by:

Hypersecretion of Growth Hormone in adults does not cause further increase in height, because:

In Bougainvillea thorns are the modifications of :

In case of poriferans, the spongocoel is lined with flagellated cells called:

The e.m.f. of a Daniell cell at $298\, K$ is $E _{1}$. $Zn / SO _{4}(0.01 M ) \| CuSO _{4}(1.0 M ) / Cu$ When the concentration of $ZnSO _{4}$ is $1.0\, M$ and that of $CuSO _{4}$ is $0.01\, M$, the e.m.f. is changed to $E _{2}$. What is the relationship between $E _{1}$ and $E _{2}$ :

Life cycle of Ectocarpus and Fucus respectively are:

Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of: