CAT Question of the Day Answer the question based on the passage given below. Vegetable-tanned leather is tanned using tannin and other ingredients found in vegetable matter, such as tree bark prepared in bark mills, and other such sources. It is supple and brown in color, with the exact shade depending on the mix of chemicals and the color of the skin. It is the only form of leather suitable for use in leather carving or stamping. Vegetable-tanned leather is not stable in water; it tends to discolor, and if left to soak and then dry it will shrink and become less supple and harder. In hot water, it will shrink drastically and partly gelatinize, becoming rigid and eventually brittle. Boiled leather is an example of this, where the leather has been hardened by being immersed in hot water, or in boiled wax or similar substances. Historically, it was occasionally used as armor after hardening, and it has also been used for book binding.
Which of the following is not a flaw of vegerable-tanned leather? | OPTIONS | | |  | 1) | It doesn't stay stable in water. | | | 2) | It can't be used to make shoes and jackets. | | | 3) | It changes colour in water. | | | 4) | If it soaks water and dries, it will not be as malleable. | | | 5) | It shrinks in hot water. |
Tip of the Day The number of ways in which N can be expressed as the product of two factors, including 1 and N, is (N + 1)/2 or N/2, according as N is, or is not, a perfect square. Last year's Question of the day (19-Aug-11) In planning a clinical trial, the sponsor or investigator first identifies the medication or device to be tested. Usually, one or more pilot experiments are conducted to gain insights for design of the clinical trial to follow. In medical jargon, effectiveness is how well a treatment works in practice and efficacy is how well it works in a clinical trial. In the U.S., the elderly comprise only 14% of the population but they consume over one-third of drugs. Despite this, they are often excluded from trials because their more frequent health issues and drug use produce unreliable data. Women, children, and people with unrelated medical conditions are also frequently excluded.
According to the passage, who can clinical trials be held on?
| OPTIONS | | | | | 1) | Elderly U.S. citizens, because they consume over one-third of the drugs. | | | 2) | Women and children and people with unrelated medical conditions. | | | 3) | Adult men with related medical conditions that are not part of the elderly. | | | 4) | Adult men only. | | | 5) | Young adults with related medical conditions. |
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