Which Mirror is Used for shaving?
| Convex mirror | Plane Mirror |
| Concave Mirror | None of them |
Answer : Concave Mirror
Which is the basis of the classification of the elements in Mendeleev’s periodic law?
| A.Atomic radius | B.Atmomic density |
| C. Atomic number | D. Atomic mass |
Answer : D.Atomic Mass
The ratio of numbers of atoms of nitrogen and hydrogen in ammonia molecule is
| A.3:1 | B.2:1 |
| C. 1:2 | D. 1:3 |
Answer : D 1:3
Which of the following is liquide at room temperature?
| A.Ethane | B.Ethyne |
| C. Ethanol | D. Methane |
Answer : C. Ethanol
Which of the following acids is found in vinegar?
| A.Sulpuric Acid | B.Hydrochloric Acid |
| C.Formic Acid | D. Acetic Acid |
Answer : D. Acetic Acid
The fimalemnt of electric bulb is made of which metal?
| A.Copper | B.Nichrome |
| C.Lead | D. Tungsten |
Answer : D. Acetic Acid
The Purpose of rheostat is
| A.to increase the magnitude of current | B.to decrease the magnitude of current |
| C.both to increase or decrease the magnitute of current | D. None of these |
Answer: B.to decrease the magnitude of current
Which of the following is not process of oxidation?
| A.Combustion | B.Respiration |
| C.Digestion of good | D. Precipitation |
Answer : D. Precipitation
The valancy of oxygen is
| A.1 | B.0 |
| C.2 | D. 3 |
Answer :C.2
The Deviation of which colour of ray is the maximum in white light spectrum?
| A.Red | B.Green |
| C.Yellow | D.Violet |
Answer : D.Violet
Focal length of plan in mirror is
| A.infinity | B.zero |
| C.100cm | D.50cm |
Answer : A.infinity
The body is balanced by the organ
| A.Cerebellum | B.Cranium |
| C.Brain stem | D.Cerebrum |
Answer: A.Cerebellum
Change in body in adolescnce is due to
| A.Testosterone | B.Estrogen |
| C.Thyroxine | D.both A and B |
Answer: D.both A and B
Oily Paper is
| A.Transparnet | B.Opaque |
| C.Translucent | D.None of these |
Answer: C.Translucent
Necessary for autotrphic nutrition is
| A.Chlorphyll | B.Carbon dioxide and water |
| C.Sunlight | D.All of these |
D.All of these
Magnesium is found in
