Paper Olympiad Science

Q1. Which of the following statements is true?

1. The probability of getting a boy or girl is 50%
2. The probability of getting a boy is higher than that of a girl
3. The probability of getting a girl is higher than that of a boy
4. All of these

Q2. In-vitro fertilization is suitable for women

1. who are infertile
2. with blocked oviducts
3. with damaged uterus
4. who do not ovulate

Q3. Variation is important because

1. it enables organisms to adapt to the changing environment
2. it prevents the extinction of species
3. it results in the formation of new species
4. all of the above

Q4. The lightest liquid metal is

1. Hg
2. Ga
3. Cs
4. Fr

Q5. An electric heater of resistance 200 draws a current of 1A. Calculate its power.

1. 100W
2. 200W
3. 300W
4. 200V

Q6. Which of the following cannot be added in a composting pit to prepare compost?

1. Vegetable peels
2. Plastic flowers
3. Fruit pulp
4. Earth worms and red worms

Q7. Identify the pair of elements with same number of valence electrons.

1. Cl, Ar
2. C, Ge
3. Na, Ca
4. K, Mg

Q8. A student waiting to receive his results feels mervous and the rate of his heartbeat increases. This conhition is due to the release of which of the following hormones?

1. Adrenaline
2. Thyroxine
3. Oestrogen
4. Insulin

Q9. In which two body organs does reabsorption of water take place?

1. Colon and kidneys
2. Duodenum and colon
3. Liver and kidneys
4. Liver and ileum

Q10. The ratings of three bulbs P, Q, R are 120V/24W 120V/60W and 240V/60W respectively. Identify the ascending order of their resistance.

1. P,Q,R
2. Q,P,R
3. R,P,Q
4. Q,R,P