1. The reverse effect of X-ray emission is
(a) Raman effect
(b) Compton effect
(c) Zeeman effect
(d) Photo-electric effect
2. Sour taste of ‘Coca Cola’ is due to the presence of –
(a) Acetic acid
(b) Phosphoric acid
(c) Hydrochloric acid
(d) Formic acid
3. Interferon is used for the control of
(a) Cancer
(b) Diabetes
(c) T.B.
(d) Typhoid
4. Actinides are the elements with atomic numbers from
(a) 89 to 103
(b) 101 to 115
(c) 97 to 104
(d) 36 from 43
5. What is Teflon?
(a) Fluorocarbon
(b) Hydrocarbon
(c) Microbicides
(d) Insecticide
6. In a sound wave compressions are regions where density ________.
(a) As well as pressure is high.
(b) As well as pressure is low.
(c) Is high and pressure is low
(d) Is low and pressure is high
7. Which one of the following is a degenerative disorder of the brain and one of several conditions that cause dementia, a progressive decline of mental functions resulting in memory loss and confusion?
(a) Schizophernia
(b) Alzheimer’s disease
(c) Amnesia
(d) Concussion
8. Light rays enter the eye through the outer, transparent structure at the front of the eye called the_______________.
(a) Lens
(b) Iris
(c) Cornea
(d) Optic nerve
9. _______ is the primary acid present in ripe bananas.
(a) Formic Acid
(b) Sulphuric Acid
(c) Malic Acid
(d) Hydrochloric Acid
10. What is the chemical name of slaked lime?
(a) Calcium Nitrate
(b) Sodium Chloride
(c) Calcium Chloride
(d) Calcium hydroxide
11. In his periodic table, Mendeleev could NOT assign a correct position to ______.
(a) Oxygen
(b) Carbon
(c) Nitrogen
(d) Hydrogen
12. Who among the following gave the ‘Law of Octaves’?
(a) Lavoisier
(b) Mendeleev
(c) Newlands
(d) Dobereiner
13. ______ are details of appearance or behavior or in other words, a particular form or a particular function in classification of organisms.
(a) Speciation
(b) Evolution
(c) Characteristics
(d) Illustration
14. Which among the following is respiratory pigment in human beings?
(a) Melanin
(b) Haemoglobin
(c) Rhodopsin
(d) Bilirubin
15. During the day which process is the major driving force inthe movement of water in the xylem?
(a) Transpiration pull
(b) Evaporation
(c) Suction
(d) Translocation
16. Alveoli are balloon like structures within the ______.
(a) Lungs
(b) Kidney
(c) Liver
(d) Heart
17. The skin, the lining of the mouth, the lining of the blood vessels, lung alveoli and kidney tubules are all made of which type of tissue?
(a) Epithelial tissue
(b) Connective tissue
(c) Muscular tissue
(d) Nervous tissue
18. As an object falls freely its _____________.
(a) Kinetic energy gets converted into potential energy
(b) Potential energy gets converted into kinetic energy
(c) Momentum gets converted into gravitational force
(d) Gravitational force gets converted into momentum
19. Which of the following may cause the breakdown of pyruvate into lactic acid in our muscles?
(a) Lack of water
(b) Lack of Oxygen
(c) Lack of carbon dioxide
(d) Lack of nitrogen
20. Energy travels from Sun to Earth through
(a) Conduction
(b) Convection
(c) Radiation
(d) Modulation