Question : Soldering of two metals is possible because of the property of:

Option 1: Viscosity

Option 2: Osmosis

Option 3: Cohesion

Option 4: Surface tension

Question : The surface tension of water on adding detergent to it:

Option 1: increases

Option 2: decreases

Option 3: no change

Option 4: becomes zero

Question : Soap helps in better cleaning of clothes because:

Option 1: Soap acts like a catalyst

Option 2: It reduces the surface tension of the solution

Option 3: It gives strength to the solution

Option 4: It absorbs the dirt

Question : Venturi meters are used to measure:

Option 1: Rate of flow of liquids

Option 2: Liquid pressure

Option 3: Surface tension

Option 4: Liquid density

Question : Which of the following statement(s) is/are correct?

Option 1: Oxides of non-metals are basic

Option 2: Oxides of non-metals are acidic

Option 3: Oxides of metals are acidic

Option 4: All options are correct

Question : The ratio of the volume of the two cones is 2 : 3, and the ratio of the radii of their bases is 1 : 2. The ratio of their heights is:

Option 1: 3 : 8

Option 2: 8 : 3

Option 3: 4 : 3

Option 4: 3 : 4