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A shopkeeper earns a profit of 15% if he mixes 85 kg of A-type cement with 35 kg of B-type cement and sells the mixture at Rs. 46 per kg. He can increase his profit to 25% if he mixes 65 kg of A-type cement with 35 kg of B-type cement and sells the mixture at Rs. 46.5 per kg. At what price should he sell a mixture of 30 kg A-type cement and 50 kg B-type cement to earn a profit of 75%?
A construction company purchases cement at the rate of Rs. 1,000 per tonne and stores it at Rs. 100 per tonne. It is perceived that in the coming month, the price of cement will rise by Rs. 2,000 per tonne. The company already has 500 tonnes of cement. If the cement usage during a month is 1,000 tonnes, how much cement should the company purchase this month to minimize its expense in the next one?
Consider the following statements: 1) Hydrophobic cement grains possess the low wetting ability 2) Rapid-hardening cement is useful in concreting under static, or running water 3) Quick-setting cement helps the concrete to attain high strength in the initial period 4) White cement is just a variety of ordinary cement-free of coloring oxides. Which of the above statements are correct?
Which of the following statements are correct with regard to cement mortar? 1. Workability of cement mortar can be improved by addition of lime. 2. Fly-ash cement is economical in plastering jobs. 3. Addition of saw dust improves workability 4. Sand in mortar can be replaced by finely crushed fire bricks
In the following question below some statements are given followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusions logically follows the given statements. Statements: All smug is dust All dust is sand No sand is wet Conclusion: I. Some smug can be wet II. No wet is dust
Consider the following pairs: Pollutant Effect on Human Health 1.Dust of Coal Black Lung Disease 2.Textile Dust Byssinosis 3.Silica Dust Silicosis 4.Arsenic Death of RBCs Which of the above-given pair/s is/are correct?
To measure and control dust particulates in the foundry, dry dust technologies are mostly preferred than the wet dust technologies.
Assertion A : For identical strength, a composite cement-lime mortar is preferred over cement mortar.Reason R : Composite cement-lime mortar has higher drying shrinkage than cement mortar.Select your answer based on the codes given below. Codes:
In the following question, sentences of a paragraph have been jumbled and labelled as A, B, C and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A: Concrete is the most widely used material in existence and is only behind water as the planet's most-consumed resource. B: Cement mixed with fine aggregate produces mortar for masonry, or with sand and gravel, produces concrete. C: Cement is seldom used on its own, but rather to bind sand and gravel (aggregate) together.  D: A cement is a binder, a substance used for construction that sets, hardens, and adheres to other materials to bind them together.
Which of the following reagent can’t be used as the reagent in the dealkylation of alkylpyridines in the pyridine synthesis?