Category: Chemistry
1. The Nobel Prize in Chemistry, 2019 was awarded for the development of : (a) LED (b) LCD (c) Lithium-ion […]...
1. Assertion (A): Chemical fertilizers are necessary for the phosphorus needs of plants. Reason (R): One metric ton of organic […]...
1. Which one of the following is used in the manufacture of soaps? (a) Vegetable oil (b) Mobil oil (c) […]...
1. In fruits and vegetables, the wax emulsion is used for – (a) Creating shine on fruits and vegetables (b) […]...
1. Which of the following is a natural fuel? (a) Coal gas (b) Tar (c) Coke (d) Petroleum [U.P.P.C.S. (Pre) […]...
1. A mixture of which one of the following pairs of gases is the cause of occurrence of most of […]...
1. Assertion (A): Formic Acid is a stronger acid than Acetic acid. Reason (R): Formic Acid is an organic acid. […]...
1. Natural rubber is a polymer of – (a) Butadiene (b) Ethylene (c) Isoprene (d) Styrene [Jharkhand P.C.S. (Pre) 2013, […]...
1. Ethyl alcohol is made unfit for drinking by the addition of the following : (a) Potassium Cyanide (b) Methanol […]...
1. Which one of the following is the correct sequential order in which these appeared under simulated primitive earth conditions? […]...