Author: sn_admin

Let’s Check your IQ….

1. Which of the following is a large blood vessel that carries blood away from the heart?
A. Vein
B. Artery
C. Capillary
D. Nerve

2. Which of the following is not a member of the Vitamin B complex?
A. Thiamine
B. Riboflavin
C. Folic acid
D. Ascorbic acid

3. Fungi are plants that lack:
A. Oxygen
B. Carbon dioxide
C. Chlorophyll
D. None of these

4. What makes a reptile a reptile?
A. Cold blooded
B. Warm Blooded
C. Non-Hearing
D. Egg-laying

5. Which blood vessels have the smallest diameter?
A. Capillaries
B. Arterioles
C. Venules
D. Lymphatic

6. Tell the composition of soap?
A. Sodium salt with fatty acids.
B. Potassium salt with fatty acids
C. Both a & b
D. Sodium and Potassium salt mixed with chemicals

7. Which of the following compound is not used as an alkali?
A. Sodium hydroxide
B. Potassium hydroxide
C. Carbon hydroxide
D. Nitrogen hydroxide

8. Which acid is present in lemon?
A. marlic acid
B. citric acid
C. lactic acid
D. tartaric acid

9. Natural rubber is a ________ which is having high elasticity.
A. Substance
B. Material
C. Elastomer
D. Chemical using carbon as main compound

10. Which of the following is not a type of elements?
A. Metals
B. Non Metals
C. Metalloids
D. Gases

11. What is the full form of ASLV?
(A) Augmented Satellite Launch Vehicle
(B) Automatic Satellite Launch Vehicle
(C) Aero Space Launch Vehicle
(D) Area Satellite Launch Vehicle

12. Which is India's first experimental satellite launch vehicle?
(A) ASLV
(B) GSLV
(C) SLV 3
(D) None of these

13. When was the Indian Space Research Organisation (ISRO) was set up?
(A) 1962
(B) 1969
(C) 1972
(D) 1952

14. Where is the Headquarter of ISRO?
(A) Chandipur
(B) Bengaluru
(C) Mahendragiri
(D) Chennai

15. The weight of an Object on planet Mars is 348 N. Then what will be the mass of the object?
(A) 100 Kg
(B) 100 Gm
(C) 3.48 Kg
(D) 348 Kg

16. A boy standing at a distance of 172.5 meter from the base of tower shouted 'Hello'. After
what time can the boy hear the echo if the speed of sound is 345 meter per second?
(A) 0.5 sec.
(B) 1 sec.
(C) 1.5 sec.
(D) 2 sec.

17. On what principle is the construction of submarine based on?
(A) Law of gravitation
(B) Law of Inertia
(C) Pascals law
(D) Archimedesprinciple

18. A car travels 500 m distance in 3 minutes. What will be its speed in kilometre per hour?
(A) 120
(B) 100
(C) 15
(D) 30

19. Find the power of an engine working at the rate of 60 Joule/min?
(A) 60 watts
(B) 10 watts
(C) 0.1 watt
(D) 1 watt

20. When an object is kept between two plane mirrors making a certain angle, 5 images are
formed. What is the measure of an angle between the plane mirrors?
(A) 60 degree
(B) 90 degree
(C) 120 degree
(D) 72 degree

21. In which pair, units of given physical quantities are different?
(A) speed, velocity
(B) energy, work
(C) density, volume
(D) weight, force

22. The fluorescent tubes and neon sign bulbs glow because of ___________
(A) High density of gases
(B) High temperature of gases
(C) High applied voltage
(D) Presence of charged particles

23. The ratio of the masses of moving objects X and Y having equal momentum is 1:2.
Determine the ratio of their velocities.
(A) 2:1
(B) 1:2
(C) 4:1
(D) 1:4

24. Which of the following does not have methane as a major component?
(A) LPG
(B) LNG
(C) CNG
(D) Biogas

25. The batteries in the satellite are recharged by _____________
(A) Changing chemicals in the batteries
(B) Changing electrodes in the batteries
(C) Solar panels when there is sunlight
(D) Photo electric cell at any time when necessary

-Team ScienceNow

 

ANS
1.b, 2.d, 3.c, 4.d, 5.a, 6.c, 7.d, 8.b, 9.c, 10.d, 11.a, 12.c,
13.b, 14.b, 15.a, 16.b, 17.d, 18.b, 19.d, 20.a, 21.c, 22.d, 23.a, 24.a, 25.d

Riddle – Science Teaser

SOLVE THIS

Clumsy Vijay got himself into a ticklish situation. He had poured water into two bottles. One of them had ethanol in it while the other had some oil. Now he wanted to take the water out of them. Can you help him do that?…

SOLUTION

The solution to Vijay’s problem is rather simple. Oil and water do not mix. So it would be easy to separate them. All that he would have to do is to pour the liquid from that particular bottle into a separation funnel. If he now gives it some time the two immiscible liquids would separate with a clear demarcation line. He should now resort to the process of decantation. If he merely pours out oil in the top layer, the remaining liquid will be water. If he uses the separation funnel he can open the tap at the bottom and let water come out. On the other hand, ethanol which is an alcohol mixes with water so mere decantation will not help. He should employ the technique of fractional distillation. Fortunately for Vijay alcohol boils at a much lower temperature than water. So he can let alcohol evaporate at that temperature and then collect the remaining water

-Team ScienceNow