Select the correct option based on statements below:
Assertion (A): | The stability of a crystal is reflected by the magnitude of its melting point. |
Reason (R): | Greater the intermolecular forces of attraction, the higher will be the stability and melting point of the substance. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe pair having only molecular solids among the following is -
1. Brass and SiC
2. Ammonium phosphate (NH4)3PO4
3. SiC and plastic
4. Tetra phosphorus decaoxide (P4O10) and I2
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe number of lattice points in one unit cell of face-centred tetragonal lattice is -
1. 4
2. 12
3. 14
4. 9
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe similarity between metallic and ionic crystals is -
1. | Both these crystal types are held by the electrostatic force of attraction. |
2. | Both these crystal types are held by the Van der Waal's forces of attraction. |
3. | Both these crystal types are held by hydrogen bonding. |
4. | Both these crystal types are held by covalent bonding. |
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAluminum crystallizes in a cubic close-packed structure. It's metallic radius is 125 pm. The number of unit cells in 1.00 cm3 of aluminum are :
1. 2.27 x 1022
2. 354 x 1022
3. 4.54 x 1022
4. 127 x 1020
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology