Question : The correct order of electron affinity of Halogens is –

Option 1: F < I < Br < Cl

Option 2: I < Br < Cl < F

Option 3: I < Br < F < Cl

Option 4: I > Br > F > Cl

Question : The buffer action of blood is due to the presence of:

Option 1: HCl and NaCl

Option 2: Cl^- and CO₃^2-

Option 3: Cl^- and HCO^-₃

Option 4: HCO₃^- and H₂CO₃

Question : Let $\sqrt[3]{a}=\sqrt[3]{26}+\sqrt[3]{7}+\sqrt[3]{63}$. Then:

Option 1: $a<729$ but $a>216$

Option 2: $a<216$

Option 3: $a>729$

Option 4: $a = 729$

Question : If p = – 0.12, q = – 0.01, and r = 0.015, then the correct relationship among the three is:

Option 1: q > p > r

Option 2: p > r > q

Option 3: p > q > r

Option 4: r > q > p

Question : Two circles C₁ and C₂ touch each other internally at P. Two lines PCA and PDB meet the circles C₁ in C, D, and C₂ in A, B respectively. If $\angle$BDC=120°, then the value of $\angle$ABP is equal to

Option 1: 60°

Option 2: 80°

Option 3: 100°

Option 4: 120°