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General Science English IAS (Pre) 2000

Q61.Is Phytotron a technique?

ATo grow the plant in the condition when it is disease free BTo save the endangered species of plant CTo grow the plant at the time it stops growing DTo induce mutation

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General Science English IAS (Pre) 1998

Q62.Estuaries possess distinct blooms of excessive growth of a pigmented dinoflagellates. These blooms are

ARed tides BSea tides CBlack tides DSea flowers

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General Science English Jharkhand PCS (Pre) 2013

Q63.Which one of the following is responsible for differentiation between Gram-positive and Gramnegative bacteria?

ACell membrane BCell wall CRibosome DNone of the above

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General Science English RAS/RTS (Pre) 1997

Q64.Liver fluke in bile duct remains in

AHorse BCow CMan DSheep

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General Science English UPPCS (Mains) 2014

Q65.The most abundantly found organic compound in nature is

AGlucose BFructose CSucrose DCellulose

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General Science English UPPCS (Mains) 2012

Q66.Which of the following matter is most abundantly found in nature?

AGlucose BCellulose CFructose DSucrose

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General Science English UPPCS (Pre)(Re. Exam) 2015

Q67.The ‘xylem’ in plants is responsible mainly for

ATransportation of food BTransportation of amino acid CTransportation of water DTransportation of oxygen

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General Science English 53rd to 55th BPSC (Pre) 2011

Q68.Water is conducted in vascular plants by

APhloem tissue BParenchyma tissue CMeristems DXylem tissue

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General Science English UPPCS (Pre) 2000

Q69.The age of the tree, in years, can be ascertained by

AIts weight BIts height CThe number of its annular rings DLength of its root

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General Science English Uttarakhand PCS (Pre) 2006

Q70.Carbon dating is used to determine the age of

AFossils BPlants CRocks DNone of the above

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General Science English 39th BPSC (Pre) 1994

Q71.The age of most ancient mountain group is assessed by

APotassium organ process BC14 process CRa-Siprocess DUranium-Lead process

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General Science English Manipur PSC (Pre) 2019 IAS (Pre) 1999

Q72.A person of mixed European and Indian blood in Latin American is called

AMulatto BMestizo CMeiji DMaumau

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General Science English UPPCS (Mains) 2010

Q73.Auxanometer is used

ATo measure the rate of photosynthesis BTo measure the rate of growth CTo measure rate of osomosis DTo measure the loss of energy

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General Science English West Bengal PSC (Pre) 2019 RAS/RTS (Pre)(Re. Exam) 2013

Q74.Eutrophication of water body results from

ASubmersing idols in the water body BDepletion of oxygen CEnhanced growth of algae or algal blooms DHigh amounts of nitrogenous nutrients and orthophosphates

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General Science English IAS (Pre) 1996

Q75.Physico-chemical characteristics of water shows in water sources this changes is due to

AAquatic macrophytes BAquatic fungi CEffluents DEvapotranspiration

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General Science English UP UDA/LDA (Mains) 2010

Q76.In fruits and vegetables, was emulsion is used for

ACreating shine on fruits and vegetables BExtension of storage life CEnhancing the ripening process DNone of the above

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General Science English 44th BPSC (Pre) 2000

Q77.Which scientist has modified the ‘erosional cycle’?

APenck BDavis CHutton DDutton

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General Science English IAS (Pre) 2008

Q78.What is agent orange?

AAn ace spying group trained by the police in London BA weed-killing chemical used by the US military in the Vietnam War CA technique used in the advanced railways safety procedure DA special chemical used in making alloy steel

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General Science English IAS (Pre) 1995

Q79.The final Agent Orange raid in Vietnam took place in 1970 areas have begun to bloom again. But 19 years after the end of the war, it seems plain that Agent Orange is killing and maiming human beings, something it never intended to do. The apparent toxic fallout from those clouds is a crop of human miseries including cancers, miscarriages and birth defects that may persist for decades. The offensive substance referred to in this quotation is

ADDT used as insecticide BA complex mixture of herbicides and weedicides used to increase agricultural output in the South Vietnam under the US aid programme CA complex mixture of DDT and other insecticides used as aerial sprays for protection against malaria and other tropical diseases DDioxin used as defoliants

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General Science English UP Lower Sub. (Pre) 2009

Q80.Which of the following is used in I-world war?

ALuciste BMustard gas CMethyl cyanide DPhosgene

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