Due to which of the following acids, Milk tastes sour when kept in the open for sometime?
[A] Lactic Acid
[B] Citric Acid
[C] Acetic Acid
[D] Carbonic Acid

Which two elements are combined to form candles?
[A] Paraffin Wax and Stearic Acid
[B] Bees Wax and Stearic Acid
[C] Higher Fat Acids and Stearic Acid
[D] Bees Wax and Paraffin Wax

Which one of the following forms the chief constituent of Vinegar?
[A] Formic acid
[B] Acetic acid
[C] Salicylic acid
[D] Oxalic acid

Which particle is the most essential component to continue the chain reaction during the uranium fission?
[A] Electron
[B] Proton
[C] Neutron
[D] Positron

What kind of fertilizer is Urea?
[A] Sodium fertilizer
[B] Phosphatic fertilizer
[C] Nitrogenous fertilizer
[D] Potassium fertilizer

Which of the following is a physical change?
[A] Oxidation
[B] Reduction
[C] Sublimation
[D] Decomposition

The nucleus of an atom consists of which of the following?
[A] Electrons and Neutrons
[B] Electrons and Protons
[C] Protons and Neutrons
[D] All of the above

What are detergents made of?
[A] Sodium salts of fatty acids
[B] Sodium salts of sulphonic acids
[C] Sodium salts of benzoic acid
[D] None of the above

Which noble gas is used in radiotherapy?
[A] Neon
[B] Argon
[C] Radon
[D] Xenon

Highest percentage of nitrogen is found in which among the following fertilizers among the given options?
[A] Calcium ammonium nitrate
[B] Ammonium nitrate
[C] Calcium nitrate
[D] Urea