1) Materials that do not allow light to pass through them are called _______________ a) Transparent b) opaque c) Transclucent d) separation 2) Materials which can be pressed easily are called _____ materials. a) soft b) hard 3) Find the odd one out: a) Iron b) wood c) nail d) cotton 4) Which of the following is soluble in water? a) Common salt b) Chalk power c) Sand d) Plastic 5) Glass is _________________ a) Opaque b) Translucent c) Transparent d) none of these 6) Which of the following does not float on water? a) Feather b) Paper c) Coconut oil d) Stone 7) Which of the following substance is translucent? a) Wood b) Sand paper c) Oily paper d) Water 8) Which one of the following dissolve in water? a) Wood b) A piece of rock c) Sugar d) Plastic 9) Which one of the following is a transparent material? a) Rock b) Wood c) Glass d) Paper 10) Oil and water can be separated through ___________________ a) filter paper b) distillation c) evaporation d) separating funnel 11) The process of settling down of the particles of an insoluble solid in a liquid is called______________ a) decantation b) sedimentation c) winnowing d) Sieving 12) Which one of the following is the smallest unit of length? a) mm b) km c) cm d) m 13) Tiny pieces of stones are usually separated from pulses before cooking by the method called __________ a) threshing b) sieving c) hand picking d) winnowing 14) The unit you will use to measure the distance from Delhi to Patna is _____________ a) centimetre b) kilometre c) millimetre d) decimetre 15) To measure the length of a curved line, you will use: a) thread b) geometry scale c) divider d) both a and c 16) Handspan cannot be used to measure length accurately. a) TRUE b) FaLSE 17) Which of the following modes of transport is not based on the invention of the wheel? a) Boat b) Bicycle c) Bus d) Bullock cart 18) 1 cm = ______________ mm a) 10 cm b) 10 mm c) 10 m d) 10 km 19) which of the following unit is a standard unit of length ? a) Handspan b) cubit c) km d) Footpan 20) A distAnce of 8 kms is Also equals to ____________________ a) 8000 m b) 800 m c) 80 m d) 0.8 m

SORTING Materials into groups

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ลีดเดอร์บอร์ด

สไตล์ภาพ

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