IIT JEE / PMT Module Test 4 : Chemistry : Surface and Solid State

Normal type of MCQ with one correct option Unit cell of Fe3O4 (Ferrous ferrite) has 32 O2( ions in the unit cell. Then the unit cell of Fe2O4 has:
16 Fe2+ ions
8 Fe3+ ions
16 Fe3+ ions and 8 Fe2+ ions
None of these
Normal type of MCQ with one correct option Paramagnetic substances are those in which the individual atoms, ions or molecules posses a permanent magnetic dipole moment. In the absence of an external magnetic field, the atomic dipoles of paramagnetic substance are as below:
A
B
C
D
Normal type of MCQ with one correct option In a face centered cubic arrangement of A and B atoms whose A atoms are at the corner of the unit cell and B atoms at the face centered. One of the A atom is missing from one corner in unit cell. The simplest formula of compound is:
A7B3
AB3
A7B24
A7/8B3
Normal type of MCQ with one correct option Which of the following gases are of paramagnetic nature?
Oxygen
N2O4
CO2
H2
In this, there may be more than one option correct Which of the following are colloids? (A) Smoke (B) Ruby glass (C) Pumic stone (D) Chlorophyll
A,B
B
C,D
A,B & C
Comprehension Many lyophilic sols and a few lyophobic sols when coagulated under some special conditions. Change into semi rigid mass, enclosed whole amount of liquid with in itself, it is called get and the process is called gelation. Gelatin Agar- Agar, gum-Arabic can be converted into gels by cooling them under moderate concentration conditions. Hydrophobic sols like silicic acid, Al(OH)3 are prepared by double decomposition and exchange of solvent method. Which of the following is used to adsorb water?
Silica gel
Calcium acetate
Hair gel
Cheese
Comprehension Many lyophilic sols and a few lyophobic sols when coagulated under some special conditions. Change into semi rigid mass, enclosed whole amount of liquid with in itself, it is called get and the process is called gelation. Gelatin Agar- Agar, gum-Arabic can be converted into gels by cooling them under moderate concentration conditions. Hydrophobic sols like silicic acid, Al(OH)3 are prepared by double decomposition and exchange of solvent method. The process of imbibing water when elastic gels are placed in water is called
imbibation
syneresis
coagulation
thixotropy
Comprehension Many lyophilic sols and a few lyophobic sols when coagulated under some special conditions. Change into semi rigid mass, enclosed whole amount of liquid with in itself, it is called get and the process is called gelation. Gelatin Agar- Agar, gum-Arabic can be converted into gels by cooling them under moderate concentration conditions. Hydrophobic sols like silicic acid, Al(OH)3 are prepared by double decomposition and exchange of solvent method. Some types of gels like gelatin and silica liquefy on shaking thereby changing into sols. The sols on standing change back into gels. This process is known as.
syneresis
thixotropy
double decomposition
peptization
ASSERTION(REASON Assertion. Isoelectric point is pH at which colloidal solution can move towards either of electric. Reason. At isoelecric point, colloidal solution because electrically neutral.
Both A and R are true and R is correct explanation of A
Both A and R are true and R is not correct explanation of A
A is true, R is false
A is false, R is true
/
(A) ((S); (B) ((R); (C)( (Q); (D) ((P);
(A) ((R); (B) ((S); (C)( (Q); (D) ((P);
(A) ((S); (B) ((Q); (C)( (R); (D) ((P);
(A) ((S); (B) ((R); (C)( (P); (D) ((Q);
Description:

This is the FREE Module test 4 of Chemistry; the covered chapter is Surface and Solid State. Keep checking for Exclusive Paid Test series for IIT JEE and AIPMT from us at a very nominal cost at WiZiQ.com Happy Learning; all the best!

Discussion
SPARKX Chemistry
Chemistry in Chandigarh for Engineering & Medical entrance
User
6 Members Recommend
309 Followers

Your Facebook Friends on WizIQ

More Tests By Author

IIT JEE / PMT Test Series : Module 7 : +1 : Chemistry : Chemical Equilibrium
10 Questions | 1550 Attempts

IIT JEE / PMT Test Series : Module 4 : +1 : Physics : Work, Power & Energy
10 Questions | 3419 Attempts

IIT JEE / PMT Test Series : Module 3 : +1 : Chemistry : Classification of Elements
10 Questions | 1077 Attempts