Sample Test: Chemistry - NEET MCQ

• Meprobamate, which is sold as Equanil, is an anxiolytic carbamate analog.
• This was the best-selling mild tranquilizer for a time, which was eventually substituted by benzodiazepines because of their larger clinical index and reduced occurrence of harmful side effects.

Weaker the base, better is the leaving group. Hence, basicities decrease in the order 

Therefore, the order of leaving group ability decreases in the reverse order (IV) > (III) > (I) > (II). 

No resonance and lone pair of electrons on sp³ hybridized N atom.

Iodoform reaction:

Nitro is strongly electron withdrawing group. At ortho position intramolecular hydrogen bond reduces the acidic strength. 

Gauche form can be more stable when intramolecular H-bonding occurs.

– NO₂  group increases the reactivity in nucleophilic substitution on benzene ring due to –R and –I effect.

More number of ligands.

EAN = 26- 2 + 6 x 2 = 36

Complementary colour.

The aqueous solution of CuSO₄ consist of the complex [Cu(H₂O)4]²⁺ ion which absorbed in orange-red region and impart deep blue colouration to solution.

• XeF₄ is square planner.
• The shape of XeF₄  is square planar. The central Xe atom has 4 bond pairs of electrons and two lone pairs of electrons.
• It undergoes sp³d² hybridization which results in octahedral electron geometry and square planar molecular geometry.
• The two lone pairs are at opposite corners of an octahedron. This minimizes repulsion between them.

Wrought iron is an iron alloy with a very low carbon content (less than 0.08%) in contrast to that of cast iron (2.1% to 4%).

Gold sol is negatively charged.

It is zero order reaction, 

As no of ions increases, lowering of VP increases.
here:

• NaCl = 2 ion
• CaCl₂​  = 3 ion 
• AlCl₃   = 4 ions
• Al₂​(SO₄​)₃​ = 5 ions

So, correct order is (1) > (2) > (3) > (4)