A. Oxygen and ammonia
B. Hydrogen and helium
C. Hydrogen and oxygen
D. Methane and hydrogen
A. Alcohol
B. Oxalic acid solution
C. Kerosene oil
D. None of these
A. Snellen chart
B. Maslow’s pyramid
C. Gantt chart
D. Peptide test
A. O1
B. O2
C. O3
D. O4
A. Vitamin b1
B. Vitamin b6
C. Vitamin b9
D. Vitamin b12
A. Snail
B. Octopus
C. Spider
D. All of above
A. Fear of dogs
B. Fear of helicopters
C. Fear of touch
D. Fear of houses
A. Kidney
B. Brain
C. Spleen
D. Liver
A. Nitrogen
B. Hydrogen
C. Carbon dioxide
D. Argon
A. Dry skin
B. Dry mouth
C. Dry nose
D. Dry head