1) Which of the following is not a property used to sort materials into groups? a) Hardness b) Solubility c) Weight d) Transparency 2) Which of the following materials is soluble in water? a) Oil b) B. Sand c) C. Salt d) D. Wood 3) Which material is used to make transparent objects? a) Wood b) Paper c) Glass d) Rubber 4) Chair, Table and Plough are made of which material? a) Wood b) Paper c) Leather d) Plastic 5) Which of the following materials is known for being hard? a) Cotton b) Iron c) Sponge d) Rubber 6) What is the term used for materials that do not allow light to pass through them? a) Transparent b) Translucent c) Opaque d) Luminous 7) The material through which object can be seen but not clearly a) Transparent b) Opaque c) Translucent d) Luminous

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