Science prep 1 unit 1

The colour property is a distinguishing factor between.......

• table salt and flour

• oxygen and nitrogen

• iron and gold

• oxygen and carbon dioxide

Density of matter=.................

• Volume ÷ mass

• mass ÷ volume

• mass × volume

• mass + volume

The density of a substance whose mass is 15 gm and occupies 30 cm³ is ........

• 2 gm/cm³

• 0.5 gm/cm³

• 5 gm/cm³

• 3 gm/cm³

In this figure, if the volume of the two balls (X) and (Y) is equal, so the mass of ball (X) is ................... the mass of ball (Y).

• less than

• equal to

• more than

Heating coils are made up of ............... alloy.

• iron-copper

• nickel-iron

• nickel-chrome

• chrome-copper

All of the following solutions conduct electricity except

• salt solution

• acidic solution

• sugary solution

• alkaline solution

Cooking pans are made up of ................

• iron only

• aluminium only

• stainless steel only

• aluminium and stainless steel

The intermolecular spaces among the molecules of ................... are very small.

• iron

• mercury

• nitrogen

• water

The .......................... matter doesn't take the shape of the container.

• solid

• liquid

• gaseous

The molecule is composed of very small particles called ...........................

• atoms

• elements

• compounds

• cells