1. Total internal reflection takes place when light travels from
A denser medium to a rarer medium
A rarer medium to a denser medium
A denser medium to a rarer medium and the angle of incidence is greater than the circle angle
A rarer medium to a rarer medium and the angle of incidence is greater than the circle angle

2. The mark stamped on the voter's finger is made of chemical
Hydrogen Peroxide
Carbon Tetrachloride
Calcium Phosphate
Silver Nitrate

3. Petrol is obtained from crude oil by the process of
Crystallization
Decantation
Fractional distillation
Sublimation

4. Hemoglobin is
Carbohydrate
Nucleic acid
Fat
Protein

5. Which of the following is called as "good cholesterol"?
High-density Lipoproteins (HDLs)
Low-density Lipoproteins (LDLs)
Very-Low-density Lipoproteins (VLDLs)
Chylomicrons

Read the following statements and use it for answering the questions 6 to 9:
A,B,C,D,E and F are students. The following statements describe what they are studying:
(1). A is not a law student
(2). B and E are not engineering students
(3). B is not a medical student
(4). A and D are not engineering students
(5). A and B are not alike
(6). One student can study more than one subject
6. Which two students are medical students?
A and B
E and F
A and D
B and F

7. Which two students are engineering students?
A and C
B and F
C and F
B and E

8. Which student is both law and medical student but not an engineering student?
E
B
A
D

9. Which two student is neither engineering not medical students?
B
D
C
E

10. Find the odd figure
A B C D