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नवीनतमलोकप्रियमूल्यांकनपेज देखें 293 of 425कुल सवाल 3400 जॉइन Examsbook

प्र: Which statement best describes an igneous intrusion? 1522 0

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    Igneous intrusion for when ice crystals splash into lava
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  • 2
    Magma is injected into surrounding rock forming an igneous intrusive
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  • 3
    Magma is exported to an open area and forms iron
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  • 4
    Magma explodes to the surface and forms a smooth outer layer of rock
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उत्तर : 2. "Magma is injected into surrounding rock forming an igneous intrusive"
व्याख्या :

Answer: B) Magma is injected into surrounding rock forming an igneous intrusive Explanation: Magma is injected into surrounding rock forming an igneous intrusive.   Actually it is a plutonic formation in which magma present beneath Earth surface deforms the shape of rocks present above it

प्र: A man can row against the current three fourth of a kilometer in 15 min and returns same distance in 10 min, then ratio of his speed to that of current? 2763 0

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    5:1
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  • 2
    3:1
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  • 3
    4:1
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  • 4
    2:1
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उत्तर : 1. "5:1"
व्याख्या :

Answer: A) 5:1 Explanation: Let the speed of the man in still water = p kmph Speed of the current = s kmph Now, according to the questions (p + s) x 10 = (p - s) x 15 2p + 2s = 3p - 3s => p : s = 5 : 1   Hence, ratio of his speed to that of current = 5:1.

प्र: Which of the following pairs is mismatched? 2629 0

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    Pila globosa - pearl
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  • 2
    Kenia lacca - lac
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  • 3
    Apis indica - honey
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  • 4
    Bombyx mori - silk
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उत्तर : 1. "Pila globosa - pearl"
व्याख्या :

Answer: A) Pila globosa - pearl Explanation: Pinctada vulgaris is a bivalve from which pearl is obtained.

प्र: Which of the following is not a polymer? 2174 0

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    DNA
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  • 2
    Glucose
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  • 3
    Starch
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  • 4
    Cellulose
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उत्तर : 2. "Glucose"
व्याख्या :

Answer: B) Glucose Explanation: Since A polymer is a large molecule, or macromolecule, composed of many repeated subunits. Glucose is not a polymer.

प्र: Which of the following is generally true about the stratosphere? 2209 0

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    It is very dry
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  • 2
    It is very moist
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  • 3
    The dryness level varies with the season
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  • 4
    The dryness level varies with the moon cycle
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उत्तर : 1. "It is very dry"
व्याख्या :

Answer: A) It is very dry Explanation: The stratosphere layer of the atmosphere is very dry.

प्र: abcdefghijklmnopqrstuvwxyz Riddle What sentence contains all abcdefghijklmnopqrstuvwxyz? 1295 0

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उत्तर :
व्याख्या :

The Quick Brown Fox Jumped Over The Lazy Dog  is the sentence which contains all 26 alphabets i.e, from a to z.

प्र: Which among the following is NOT a function of RBI? 14177 0

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    Serve as debt manager to other banks
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  • 2
    To work as monetary authority and implement its Monetary Policy
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    Serve as banker to central and state governments
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  • 4
    To serve as issuer of bank notes
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उत्तर : 1. "Serve as debt manager to other banks"
व्याख्या :

Answer: A) Serve as debt manager to other banks Explanation: Serve as debt manager to other banks is not a function of RBI Bank.

प्र: Which of the following statements is most accurate regarding infection with parvovirus B19? 2427 0

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    Parvovirus B19 causes severe anemia because it preferentially infects erythrocyte precursors
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  • 2
    Parvovirus B19 can cause hydrops fetalis via transplacental infection of a fetus in a seropositive mother
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  • 3
    Parvovirus B19 can be diagnosed by detection of viral RNA using PCR or hybridization assays
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  • 4
    Parvovirus B19 replicates in the host cell nucleus utilizing a virally encoded DNA polymerase to create a double- stranded DNA intermediate
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उत्तर : 1. "Parvovirus B19 causes severe anemia because it preferentially infects erythrocyte precursors"
व्याख्या :

Answer: A) Parvovirus B19 causes severe anemia because it preferentially infects erythrocyte precursors Explanation: Parvovirus B19 causes severe anemia because it preferentially infects erythrocyte precursors.   a. Parvovirus B19 binds preferentially to the erythrocyte blood group P antigen on erythroid precursor cells. Answers B, C, D are incorrect: b. after entry the single-stranded viral DNA genome is transported to the cell nucleus where the host DNA polymerase synthesizes the complimentary DNA strand. c. Parvovirus B19 infection can be diagnosed by direct detection of viral DNA not RNA. d. the fetus of a seropositive mother is protected from infection by maternal circulating antibodies.

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