NSTSE Sample Paper Solutions Class 6

UNIFIED COUNCIL A n I S O 9 0 0 1 : 2008 C e r t i f i e d O r g a n i s a t i o n Test Assess Achieve NATIONAL LEVEL SCIENCE TALENT SEARCH EXAMINATION Solutions for Class : 6 MATHEMATICS 8. (C) All the given functions are performed by the cap of a cell. The main function of 1. (B) A mixed fraction can be written as an a cap of a cell is to act as a positive improper fraction. terminal. 2. (C)  ABE,  BEC,  ABC,  AED,  EDC, 9. (B) P and T are unlike poles in a horse-shoe  ACD,  ABD,  BCD are there magnet that attract most of the paper 3. (C) Shaded area = Total area – unshades area clips. 10. (C) Figures shown in options (B) and (D) are 1 = 4  3 cm2 – 8   1 1 cm2 not the correct ways of making a magnet. 2 CHEMISTRY = 12 cm2 – 4 cm2 = 8 cm2 11. (C) ‘W’ does not have an atmosphere, so it 4. (C) Except ‘C’ option remaining are not is not a suitable place for living things polygons. to survive as living things need air to 5. (B) x2 + 12x + 36 = (x+6)2 breathe. X has no oxygen, so it is not a suitable place for living things to  x = 64 x + 6 = 64 + 6 = 70 survive as they need to respire. As Y 2 2  (x+6) = 70 = 4900 has oxygen for respiration and contains PHYSICS water, it is a suitable place for living things to survive. Oxygen makes up 21% 6. (B) If Q is the north pole, the poles at P and of the air on the Earth. As Z has an R are south pole and north pole atmosphere that is mainly made of respectively as shown below : carbon dioxide, it is not a suitable place for living things to survive. S P N S Q S R 12. (B) Following are the correct processes: N N Change of ice to water - melting Change of water to ice - freezing 7. (D) All the bulbs must have their metal tip and metal casing connected to the other Change of water to steam - boiling components in the circuit in order to Change of water vapour to water - light up. In option (D), the bulb at the condensation top does not have its metal casing connected to the rest of the circuit, so 13. (D) Saline water is hard due to dissolved electric current cannot flow through it salts in it. Therefore, it is not used for to light it up. the given purposes. website : www.unifiedcouncil.com 1

14. (C) The rate of water evaporation (how fast 18. (D) Balsam is a dicot have taproot system. liquid evaporates) depends on how wide the surface area is. The wider the surface 19. (D) Animals that hunts and kills its prey area the quicker the evaporation process (animals) are called predators. will take place, which is shown by the 20. (D) Bat is a mammal. Hen, Owl and Ostrich more amount of water lost in the beaker. are birds. 15. (A) In wheat flour, flour is the wanted component while husk (X) is the unwanted component. When cut paddy (Y) stalks are beaten on a stone, the grain seeds separate from their stalks. CRITICAL THINKING BIOLOGY 21. (C) 16. (C) Neck joint is pivot joint and thumb joint 22. (C) is saddle joint. 23. (C) 17. (C) In the given classification ‘X’ is terrestrial 24. (C) ecosystem. 25. (D) website : www.unifiedcouncil.com 2