Indicate the correct statement__________________?

Related Mcqs:

1. Which of the following represents the correct electronic configuration of VII A group elements in the ground state ?

   A. ns2p2
   B. ns2p4
   C. ns2p5
   D. ns2p6

2. Which of the following statements about isotopes is correct ?

   A. Isotopes with odd atomic number are abundant
   B. Isotopes with odd atomic number and even mass number are abundant
   C. Isotopes with even atomic number and even mass number are abundant
   D. Isotopes with even atomic number and odd mass no are abundant

3. Which of the following statement is correct ?

   A. size of Cl atoms > Cl- ion
   B. size of Na+ ion < Na atom
   C. size of Na atom < Na+ ion
   D. Cl- < Na+

4. The determination of correct molecular weight from Raoults law is applicable to_________________?

   A. a volatile solute in dilute solution
   B. a non-electrolyte & non volatile solute in concentrated solution
   C. a non-electrolyte & non volatile solute in concentrated solute
   D. non volatile solute in a dilute solution

5. The correct electronic configuration of Cr is____________________?

   A. [Ar]4s23d4
   B. [Ar] 4s23d4
   C. [Ar]4s03d5
   D. [Ar]4s13d5

6. Which sequence of steps is correct for the manufacture of cement ?

   A. crushing heating mixing grinding
   B. crushing mixing heating grinding and mixing
   C. crushing grinding mixing heating
   D. mixing heating grinding crushing

7. Keeping in view the size of atom which order is correct one ?

   A. Mg > Sr
   B. Ba > Mg
   C. Lu > Ce
   D. C1 > I

8. Which one of the following statement is not correct about benzene ?

   A. On hydrogenation 208 KJ/mole is liberated
   B. C-H bond length in benzene is 1.09 A?
   C. Molecular mass of benzene is 78.108
   D. Resonance energy of benzene is 150.5 K Cal/mole

9. Identify the correct statement regarding CO_______________?

   A. it combines with H2O to form carbonic acid
   B. it reacts with red blood cells of haemoglobin
   C. it is powerful oxidizing agent
   D. it is used to prepare aerated drinks

10. Which one of the following is the correct sequence according to atomic weights?

    A. Fe>Co> Ni
    B. Co > Ni > Fe
    C. Ni> Co> Fe
    D. Co >Fe>Ni

    Submitted by: Muhammad Ali Kunbhar