Melting and Boiling Points
Trending Questions
Q. 28. What is the dipole moment order for (CH3Cl);(CH2Cl2);(CHCl3);(CCl4)
Q. In which of the following groups of periodic table melting point or boiling point increase down the group?
1
2
13
17
Q. 5. Gold crystallises in CCP structure. the total number of voids present in 197 grams of gold will be (Au=197) 1. 197N(a) 2. 2 N(a) 3. 3 N(a) 4. 4197 N(a)
Q. Which of the following compound can form during the free radical chlorination of methane
1)CH3Cl 2)C2H6 3)CCl4 4)all of these
Q. Arrange the following in increasing order of boiling point:
(i) CH3−CH2−CH2−CH2−Br
(ii) (CH3)2−CH−CH2−Br
(iii) (CH3)2−CH−Br
(i) CH3−CH2−CH2−CH2−Br
(ii) (CH3)2−CH−CH2−Br
(iii) (CH3)2−CH−Br
- i>ii>iii
- ii>i>iii
- iii>ii>i
- i>iii>ii
Q. Arrange the following compounds in increasing order of their boiling points.
I. CH3CH2CH2Br
II. CH3CH2CH2CH2Br
III.(CH3)2CHCH2Br
IV. (CH3)3CBr
I. CH3CH2CH2Br
II. CH3CH2CH2CH2Br
III.(CH3)2CHCH2Br
IV. (CH3)3CBr
- II<I<III<IV
- III<I<IV<II
- IV<III<II<I
- I<IV<III<II
Q. Why the lattice enthalpy decreases when the size of ions increases ?
Q. 53.On heating 1.763g of hydrated BaCl_2 to dryness, 1.505 g of anhydrous salt remained. Hence the formula of hydrate is
Q. 19. Which of the following has the maximum number of unpaired electrons? 1. Mg2+ 2. Ti3 3. Fe3 4.mn2
Q. Which type of solid crystals will conduct heat and electricity?
- Metallic
- Covalent
- Molecular
- Ionic
Q. Gold crystallises in ccp structure. The total number of voids present in 197g of gold will be (Au = 197)
Q. Arrange the following compounds in increasing order of their boiling points.
I. CH3CH2CH2Br
II. CH3CH2CH2CH2Br
III.(CH3)2CHCH2Br
IV. (CH3)3CBr
I. CH3CH2CH2Br
II. CH3CH2CH2CH2Br
III.(CH3)2CHCH2Br
IV. (CH3)3CBr
- II<I<III<IV
- III<I<IV<II
- IV<III<II<I
- I<IV<III<II
Q. the difference between total no. of hyd_{}rogen atoms in78g of ethyne and 168 g of baking soda is: (a)2N_A (b)3N_A (c)6N_A (d)4N_{
Q. Which of the following atom in their ground state has maximum electron that has n+l+m=3
1) Zn 2)Mn 3)Sc d)P
