Question: __________ of rubber decreases after its vulcanisation. [A]. Resistance to the action of organic solvent [B]. Tackiness [C]. Maximum service temperature [D]. Tensile strength Answer: Option B Explanation: No answer description available for this question.

Question: Gun powder, which is an explosive comprises of charcoal, sulphur and [A]. glycerene [B]. salt petre [C]. nitro glycerene [D]. dynamite Answer: Option B Explanation: No answer description available for this question.

Question: Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture. [A]. CaO [B]. MnO2 [C]. ZnO [D]. FeS Answer: Option C Explanation: No answer description available for this question.

Question: Nickel is not used as a catalyst in the __________ reaction. [A]. shift conversion [B]. oil hydrogenation [C]. steaming reforming of naphtha [D]. ammonia cracking/dissociation Answer: Option A Explanation: No answer description available for this question.

Question: At very high concentration of enzymes, the rate of fermentation chemical reaction is __________ the concentration of reactants. [A]. independent of [B]. directly proportional to [C]. inversely proportional to [D]. proportional to the square of Answer: Option A Explanation:…

Question: Hydrodenation of vegetable oils is a/an __________ reaction. [A]. endothermic [B]. autocatalytic [C]. exothermic [D]. homogenous Answer: Option C Explanation: No answer description available for this question.

Question: Percentage of glycerene present in the spent lye obtained during soap manufacture is about [A]. 0.5 [B]. 5 [C]. 20 [D]. 35 Answer: Option B Explanation: No answer description available for this question.

Question: Hydrocynic acid (HCN) is used as an insecticide for [A]. controlling timber degradation by ants [B]. controlling poultry lice [C]. potato beetle [D]. citrus fruits Answer: Option D Explanation: No answer description available for this question.

Question: Paper pulp produced by kraft/sulphate process is [A]. bleached easily [B]. dull white in color [C]. strong fibrous [D]. dark colored Answer: Option C Explanation: No answer description available for this question.

Question: Out of the following processes of paper pulp manufacture, the maximum corrosion problem in digestion & handling equipments is encountered in the __________ process. [A]. mechanical [B]. sulphate/kraft [C]. sulphite [D]. neutral sulphite semi-chemical Answer: Option D Explanation: No…