Chemistry Ch 15 Class 12 COMMON CHEMICAL INDUSTRIES IN PAKISTAN
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______ is needed in thyroxine, the hormone of thyroid gland.
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1500•degree Celsius furnace temperature Is maintained at which zone?
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Ammonium nitrate contain nitrogen
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When hexane dioic acid is heated with hexamethylene diamine, the compound formed is:
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In the production of wrought iron Mg, Si, and P are removed in the form of:
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Which Organic acid is used in pulping of wood for paper?
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What is used in cement manufacture?
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Rayon is ____?
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The temperature zones In rotary kilns are:
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Which one of the following is an example of a co-polymer?
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The macronutrients for healthy plant growth are required in per acre.
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What is the nature of “hydrated tricalcium aluminate” (3 Ca. Al203. 6 H20) in the setting of cement?
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Genetic mutations occur in:
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“Zymase”- a group of 14 enzymes, used in the fermentation of starch, is present in:
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The crude petroleum is separated in fraction by:
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Aluminium nitrate is not used for ai
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Which of the following is a Marco-nutrient
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The zone where moisture is removed and clay is broken down into Al203, Si02, Fe203 is
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Fractions of crude petroleum can be obtained by using ___________.
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Percentage of nitrogen in urea is:
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Which in not woody raw material
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Identify the pair of rnicronutrients:
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Enzymes that are functioning within the cell are called:
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In Paper industry, sodium sulphite is buffered with
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cr. be used as a liquid fertilizer?
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What is the catalyst used in the Haber process?
H₂ + N₂ ⟶ NH₃
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Which of the following is the most widely used fertilizer in Pakistan?
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Which one of the following is an example of a condensation polymer?
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Which one of the following polymer is called as Nylon 6,6?
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Which one of the following was used as one of the earliest antiseptic and disinfectants?
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Which of the following is not a macronutrient?
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How many grams of micronutrients are needed by 1 acre of land?
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Among the most common disaccharides, one of the following is present in the milk?
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1 calorie = ______ Joules.
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Burning of which one of the following waste is considered as useful industrial fuel or to produce electricity
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Ali Durrani
