List of top Questions asked in NEET (UG)

Which of the following is not an objective of Biofortification in crops ?
Dobson units are used to measure thickness of

From the following pairs of ions which one is not an iso-electronic pair?

Erythropoietin hormone which stimulates R.B.C. formation is produced by

Consider the above reaction and identify the missing reagent/chemical.

 

Match List - I with List - II.
List-I
List-II
(a)Vaults(i)Entry of sperm through Cervix is blocked
(b)IUDs(ii)Removal of Vas deferens 
(c)Vasectomy(iii)Phagocytosis of sperms within the Uterus
(d)Tubectomy(iv)Removal of fallopian tube
Choose the correct answer from the options given below.

The slope of Arrhenius Plot (ln k v/s \(\frac{1}{T}\)) of first order reaction is −5×103 K. The value of Ea of the reaction is. Choose the correct option for your answer. [Given R=8.314 JK−1mol−1 ]

The dihedral angle of the least stable conformer of ethane is

Choose the correct option for the total pressure (in atm.) in a mixture of 4 g O2 and 2 g H2 confined in a total volume of one litre at 08C is : [Given R=0.082 L atm mol−1K−1, T=273 K]

BF3 is planar and electron-deficient compound. Hybridization and the number of electrons around the central atom, respectively are

Identify the compound that will react with Hinsberg’s reagent to give a solid which dissolves in alkali

For irreversible expansion of an ideal gas under isothermal condition, the correct option is

Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is

The correct option for the value of vapor pressure of a solution at 45\(^{\circ}\)C with benzene to octane in molar ratio 3 : 2 is : [At 45\(^{\circ}\)C vapor pressure of benzene is 280 mm Hg and that of octane is 420 mm Hg. Assume Ideal gas]

The maximum temperature that can be achieved in blast furnace is

Match List - I with List - II.

List - I

List - II 

(a)(i)Hell-VolhardZelinsky reaction
(b)(ii)Gattermann-Koch reaction
(c)(iii)Haloform reaction 
(d)(iv)Esterification

Choose the correct answer from the options given below.

Tritium, a radioactive isotope of hydrogen, emits which of the following particles?

The right option for the statement “Tyndall effect is exhibited by”, is

The incorrect statement among the following is

What is the IUPAC name of the organic compound formed in the following chemical reaction? 

Which of the following molecules is non-polar in nature

Which of the following reactions is the metal displacement reaction? Choose the right option.

Match List - I with List - II.  

List - IList - II
(a) 2SO2 (g)+O2 (g) →2SO3(i) Acid rain 
(b)HOCl(g) h\(^\nu\)→OH+Cl(ii) Smog
(c)CaCO3+H2SO4→CaSO4+H2O+CO2(iii)Ozone
(d)NO2(g) \(^{h\nu}\)→NO(g)+O(g)(iv) Tropospheric

Choose the correct answer from the options given below.

Which of the following are not secondary metabolites in plants?

In spite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?