Question: The sludge does not contain waste water from:

• 1. Bath rooms
• 2. Wash basins
• 3. Kitchen sinks
• 4. Toilets

Question: The symbol of sodium is :

• 1. Na
• 2. Sa
• 3. Pa
• 4. Ca

Question: The term Aqua means:

• 1. Water
• 2. Marsh
• 3. Alloy
• 4. None

Question: Turpentine oil is used in paints as:

• 1. Thinner
• 2. Vehicle
• 3. Base
• 4. Driver

Question: Which of following element is essential for animals but not in plants?

• 1. Potassium
• 2. Phosphorus
• 3. Calcium
• 4. Iodine

Question: which one of the following is a Metal?

• 1. Gypsum
• 2. Mercury
• 3. Limestone
• 4. none

Question: Varnish is a transparent or semi transparent solution of resinous substances in:

• 1. Alcohol
• 2. Linseed
• 3. Turpentine
• 4. All of the above

Question: light year is used to measure________?

• 1. Time
• 2. Speed
• 3. Momentum
• 4. Distance

Question: What is the energy formed due to waterfall?

• 1. potential energy
• 2. Kinetic energy
• 3. Both A and B
• 4. None of these

Question: SI unit of resistance?

• 1. Volt
• 2. Ohm
• 3. Ampere
• 4. Farad