Sawaal

 Chemistry Questions

Popular Latest Rated
Q:

A particle which is four times in mass and two times in charge that of proton is

A) helium atom B) an alpha particle
C) deuteron D) tritium
 
Answer & Explanation Answer: B) an alpha particle

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

7 4293
Q:

Which atom has the largest radius?

A) Neon B) Francium
C) Helium D) Cesium
 
Answer & Explanation Answer: B) Francium

Explanation:

which_atom_has_the_largest_radius1537434800.gif image

In the periodic table, the atomic radius increases from top to bottom in the groups and it increases from right to left in the periods.

 

Francium is the atom with largest atomic radius. Helium is the atom with smallest radius.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

3 4288
Q:

The water molecule has a dipole with the negative portion

A) localized on one of the hydrogens B) localized between the hydrogen atoms
C) pointing toward the oxygen atom D) pointing from the oxygen through the hydrogen atoms
 
Answer & Explanation Answer: C) pointing toward the oxygen atom

Explanation:

The water molecule has a dipole with the negative portion pointing toward the oxygen atom.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

2 4287
Q:

Which choice best describes the polarity of BrF5?

A) nonpolar bonds / nonpolar molecule B) nonpolar bonds / polar molecule
C) polar bonds / polar molecule D) polar bonds / nonpolar molecule
 
Answer & Explanation Answer: C) polar bonds / polar molecule

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , GATE
Job Role: Analyst , Bank Clerk

2 4246
Q:

Which among the following is the most electronegative element?

A) Flourine B) Bromine
C) Iodine D) Oxygen
 
Answer & Explanation Answer: A) Flourine

Explanation:

Flourine is the most electro negative element due to its small atomic radius .It also has the tendency to accept an electron to complete octet configuration

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

4 4201
Q:

A gas is found to have the formula . Its vapour density is 70.The value of n must be

A) 5 B) 4
C) 9 D) 6
 
Answer & Explanation Answer: A) 5

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

3 4163
Q:

Which is the Lightest of all the metals?

A) Hydrogen B) Lithium
C) Sodium D) Pottasium
 
Answer & Explanation Answer: B) Lithium

Explanation:

Lithium is the lightest of all the metals due to its low atomic number among meetals

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

4 4149
Q:

Neutrino has

A) charge +1, mass 1 B) charge 0, mas 0
C) charge -1,mass 1 D) charge 0, mass 1
 
Answer & Explanation Answer: B) charge 0, mas 0

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

5 4139