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प्र: With similar triangles the corresponding angles are equal. 2179 0

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    TRUE
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    FALSE Answer & Explanation Answer:
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उत्तर : 1. "TRUE"
व्याख्या :

Answer: A) TRUE Explanation: The given statement about similar triangles is TRUE.   Similar Triangles Theorem :: Similar triangles are two triangles with corresponding angles of equal measure, and the ratios of their corresponding sides' lengths are equal.

प्र: A fair coin is tossed 11 times. What is the probability that only the first two tosses will yield heads ? 2179 0

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    (1/2)^11
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    (9)(1/2)
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    (11C2)(1/2)^9
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  • 4
    (1/2)
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उत्तर : 1. "(1/2)^11"
व्याख्या :

Answer: A) (1/2)^11 Explanation: Probability of occurrence of an event,  P(E) = Number of favorable outcomes/Numeber of possible outcomes = n(E)/n(S) ⇒ Probability of getting head in one coin = ½,  ⇒ Probability of not getting head in one coin = 1- ½ = ½,  Hence,  All the 11 tosses are independent of each other. ∴ Required probability of getting only 2 times heads =122×129=1211

प्र: Iron rusting, chemical or physical change 2178 0

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    Chemical
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    Physical
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    Both A & B
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    None of the above
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उत्तर : 1. "Chemical"
व्याख्या :

Answer: A) Chemical Explanation: In rusting the Iron ore make a chemical reaction with the oxygen in the presence of water and environmental or atmospheric moisture to produce an Iron oxide. Iron oxide is otherwise called as rust. The rusting of iron is a chemical change because it is two substances reacting together to make a new substance.

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उत्तर :
व्याख्या :

The Riddle itself has the Answers. What is a 4 letter word Yet is written in 3 letters Everything is written with 9 letters Then with 4 letters Rarely has 6 letters Never is written in 5 letters.

प्र: Choose the synonym of 'Hypothesis' from the following options ? 2177 0

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    Theory
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    Fascination
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    Complexity
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    Falling
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उत्तर : 1. "Theory"
व्याख्या :

Answer: A) Theory Explanation: 'Hypothesis' is a word that gives a brief explanation of the concepts based on the limited evidence. The word 'theory' is closest in meaning to it.

प्र: What happens during the process of translation? 2177 0

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    Transfer RNA is made from messenger RNA
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    Copies of DNA molecules are made
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    The cell uses information from messenger RNA to produce proteins
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    Messenger RNA is made from DNA
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उत्तर : 3. "The cell uses information from messenger RNA to produce proteins"
व्याख्या :

Answer: C) The cell uses information from messenger RNA to produce proteins Explanation: Translation is the process by which a protein is synthesized from the information contained in a molecule of messenger RNA (mRNA). During translation, an mRNA sequence is read using the genetic code, which is a set of rules that defines how an mRNA sequence is to be translated into the 20-letter code of amino acids, which are the building blocks of proteins.   In short, during the process of translation source language text is conveyed to destination language.

प्र: How old are you if you are born in 1995? 2177 0

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    22
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    23
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    24
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    25
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उत्तर : 2. "23"
व्याख्या :

Answer: B) 23 Explanation: Calculating Age has 2 conditions. Let your Birthday is on January 1st. 1. If the month in which you are born is completed in the present year i.e, your birthday, then Your Age = Present year - Year you are born  As of now, present year = 2018 i.e, Age = 2018 - 1995 = 23 years.   2. If the month in which you are born is not completed in the present year i.e, your birthday, then Your Age = Last year - Year you are born As of now, present year = 2018 i.e, Age = 2017 - 1995 = 22 years.

प्र: Lens is made up of which glass 2175 0

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    Ordinary glass
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    Pyrex glass
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    Flint glass
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    Cobalt glass
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उत्तर : 3. "Flint glass"
व्याख्या :

Answer: C) Flint glass Explanation:

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