Atom is made up of smaller particles called:
a) Sub-atomic particles
b) Semi-atomic particles
c) Mixed particles
d) Nuclear particles
Explanation: An atom is made up of smaller particles called sub-atomic particles. These particles include protons, neutrons, and electrons, which are the fundamental constituents of an atom. Protons and neutrons are located in the nucleus of the atom, while electrons orbit around the nucleus in energy levels or shells.
Onion, daffodil, tulip are which kind of stems?
a) Bud
b) Bulb
c) Cladophyll
d) None of these
Explanation: Onion, daffodil, and tulip are examples of plants with bulb stems. A bulb is a modified underground stem that consists of fleshy storage leaves or scales attached to a short stem.
Valency of hydrogen and potassium is.__
a) -1 and +2
b) +1 for both
c) +1 and +4
d) +1 and -1
Three states of matter are_________
a) Ice, water and vapor
b) Solid, liquid and gas
c) Metal, water and air
d) Hydrocarbon, fats and protein
Which of the following is known as milk of magnesia?
a) sodium hydroxide
b) calcium hydroxide
c) ammonium hydroxide
d) magnesium hydroxide
Polythene is a ___________
a) Monomer
b) Polymer
c) Element
d) Fertilizer
Explanation: Polythene is a polymer. Specifically, it is a type of polymer known as polyethylene. Polyethylene is created through the polymerization of the monomer ethylene, resulting in a long-chain structure. Polythene, or polyethylene, is widely used for its versatility, being utilized in various applications due to its flexibility, durability, and chemical resistance.
