IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: Tohra is the sacred book of 2972 0

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    Judaism
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    Confucianism
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    Zoroastrianism
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    Taoism
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उत्तर : 1. "Judaism"
व्याख्या :

Answer: A) Judaism Explanation:

प्र: The main function of a school board is to 3433 0

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    manage public schools in accordance with state and federal law.
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    raise revenue for public schools through local taxes and fees.
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    propose and legislate state laws that affect the public schools.
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    serve as a school’s principals, teachers, and administrators.
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उत्तर : 1. "manage public schools in accordance with state and federal law."
व्याख्या :

Answer: A) manage public schools in accordance with state and federal law. Explanation: The main function of a school board is to manage public schools in accordance with state and federal law. The functions of the school board of a public school are: • to establish strategic direction and priorities for the school. • to monitor and review school performance and to report on it to the Director-General, parents of students at the school and staff. • to develop, maintain and review curriculum for the school. • to develop and review education policies at the school. • to establish budgetary policies for the school and approve the school budget. • to establish policies for the efficient and effective use of school assets and the management of financial risk. • to develop relationships between the school and the community and between the school and community organisations. • to make recommendations to the Director-General on issue affecting the school and to give effect to the Director-General’s directions. • to encourage parent participation in their children’s learning; and • to exercise any other function given to the board under this Act or any otherTerritory law.

प्र: A power that is vested in the president is 1414 0

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    legally guaranteed by the Supreme Court
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    legally guaranteed by the Constitution
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    subject to approval by the House
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    subject to approval by the Senate
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उत्तर : 2. "legally guaranteed by the Constitution"
व्याख्या :

Answer: B) legally guaranteed by the Constitution Explanation:

प्र: Milk is an example of a 2065 0

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    Emulsion
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    Solution
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    Gel
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    Suspension
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उत्तर : 1. "Emulsion"
व्याख्या :

Answer: A) Emulsion Explanation: Milk is an emulsion of oil in water (o/w). Emulsion: A suspension of droplets of one liquid in another. Constituents of milk : The principal constituents of milk are water, fat, proteins, lactose (milk sugar) and minerals (salts). Milk also contains trace amounts of other substances such as pigments, enzymes, vitamins, phospholipids (substances with fatlike properties), and gases.

प्र: Atmospheric pressure exerted on earth is due to 1615 0

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    gravitational pull
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    rotation of earth
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    revolution of earth
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    uneven heating of earth
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उत्तर : 1. "gravitational pull"
व्याख्या :

Answer: A) gravitational pull Explanation: The atmospheric pressure at the surface of the Earth is due to gravitational pull of the earth and is about 14.7 psi.   That means that the weight of a column of air which has a cross section of 1 square inch and which stretches from the surface of the Earth to space is 14.7 pounds.

प्र: Which of the following is biodegradable? 3861 0

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    Iron nails
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    DDT
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    Silver foil
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    Leather bags
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उत्तर : 4. "Leather bags"
व्याख्या :

Answer: D) Leather bags Explanation: Biodegradable substances can be broken down into simpler, harmless substances in nature with due course of time by the biological process such as action of microbes. They can be recycled as a part of food chain.   Here, Leather bags are biodegradable.

प्र: Callous is the opposite of 1995 0

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    emotionally hardened
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    insensitive
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    sympathetic
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    Unkind
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उत्तर : 3. "sympathetic"
व्याख्या :

Answer: C) sympathetic Explanation: A callous person is insensitive or emotionally hardened.   Hence, Callous is the opposite of Sympathetic, kind hearted, sensitive, nice,...

प्र: Acceptable noise level for human ear 1687 0

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    > 85 db
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    = 85 db
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    < 85 db
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    None of the above
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उत्तर : 3. "< 85 db"
व्याख्या :

Answer: C) < 85 db Explanation: Sound intensity or level is measured by a unit called a decibel. An 85 decibel noise level is not a safe standard for the public.   Hence, Acceptable noise level for human ear is less than 85 db.

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