General Science

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Commoncold, Influenza, Chickenpox and Measles are caused due to the attack of: / किन के आक्रमण के कारण आम सर्दी जुकाम चेचक और खसरा होता है ?

Virus only/ केवल विषाणु
Bacteria only/ केवल जीवाणु
Protozoa only/ केवल प्रजीवगण
Both virus and bacteria/ विषाणु और जीवाणु


Correct Answer :Virus only/ केवल विषाणु

Which among the following waves is used for communication by artificial satellites?
/ कृत्रिम उपग्रहों द्वारा संचार के लिए निम्नलिखित में से कौन सी तरंग प्रयोग की जाती है

Micro waves/ माइक्रो तरंगे
Radio waves/ रेडियो तरंगे
A.M/ ए एम
UV rays/ यू वी किरणें


Correct Answer :Micro waves/ माइक्रो तरंगे

Optical fibre is used for which purpose? / ऑप्टिकल फाइबर का प्रयोग कहाँ होता है?

CT scans/ सी टी स्कैन
X‐ray photos/ एक्स-रे किरण
Ultrasound scans/ अल्ट्रासाउंड स्कैन
Communication/ संचार


Correct Answer :Communication/संचार

The instrument used to measure the force and velocity of the wind is?

A)

Anemometer


B)

Voltmeter


C)

Ammeter


D)

Resistor



Correct Answer :

Anemometer


Explanation :

An anemometer is an instrument that measures wind speed and wind pressureand.
Anemometers are important tools for meteorologists, who study weather patterns. They are also important to the work of physicists, who study the way air moves.

Which metal can deposit copper from copper sulphate solution? /कौन सा धातु तांबे सल्फेट विलयन से तांबे को जमा कर सकता है?

Iron/ लोहा
Calcium/ कैल्शियम
Sulphur/ गंधक
Titanium/ टाइटेनियम


Correct Answer :Iron/ लोहा

What is the name of gas which is present in both natural gas and biogas? / प्राकृतिक गैस और बायोगैस दोनों मे मौजूद गैस का नाम क्या है?

Carbon Dioxide/ कार्बन डाइऑक्साइड
Methane/ मीथेन
Sulphur Dioxide/ सल्फर डाइऑक्साइड
Nitrogen oxide/ नाइट्रोजन ऑक्साइड


Correct Answer :Methane/ मीथेन

Which of the following is likely to cause the average increase in temperature of Earth’s atmosphere in future? / भविष्य में पृथ्वी के वायुमंडल के तापमान में औसत वृद्धि का कारण क्या है?

Atomic warfare/ परमाणु युद्ध
Increasing Ozone layer hole/ ओजोन छिद्र मे विद्तार
Dust clouds from volcanoes/ ज्वालामुखी से धूल के बादलों 
All of the above 


Correct Answer :All of the above 

What is used to dilute oxygen in the gas cylinders used by divers?  गोताखोरों द्वारा प्रयुक्त गैस सिलेंडरों में ऑक्सीजन को तरल करने के लिए क्या प्रयोग किया जाता है?

Hydrogen/ हाइड्रोजन
Methane/ मीथेन
Helium/ हीलियम
Carbon dioxide/ कार्बन डाइऑक्साइड


Correct Answer :Helium/ हीलियम

Formula of Bleaching Powder is :

A)
CaOCl2

B)
CaCO3

C)
CaKOH

D)
Ca2Al(OH)4


Correct Answer :

CaOCl2


Explanation :

Bleaching Powder (Calcium hypochlorite) is a chemical compound with formula Ca(ClO)2. the chemical formula of bleaching powder is CaOCl2 .
Preparation
Ca(OH)2 + Cl2 → Ca (OCl)Cl + H2O
It is used for water treatment and as a bleaching agents for cotton and linen in the textile industry

A large blood vessel that carries blood away from the heart to other parts of the body is: / एक बडी रक्त वाहिका जो हृदय से शरीर के अन्य भागों को रक्त पहुंचाते है:

A vein / नाड़ी
An artery/ धमनी
A capillary/ केशिका
Nerve/ तंत्रिका


Correct Answer :An artery/ धमनी

Which is the largest white blood cell in human body? / मानव शरीर में सबसे बडा श्वेत रक्त कोशिका कौन सा है?

Erythrocytes/ एरिथ्रोसाइट्स 
Monocytes/ मोनोसाइट
Lymphocyte/ लिम्फोसाइट
Femur/ जाँघ की हड्डी


Correct Answer :Lymphocyte/ लिम्फोसाइट

Deficiency of Iron can cause? / आयरन की अभाव से होता है?

(A) Anemia only/ अरक्तता एनीमिया
(B) Weak Immunity only/ कमजोर प्रतिरक्षा
Neither A nor B/ A और B दोनों नही
Both A and B/ A और B दोनों


Correct Answer :Both A and B/ A और B दोनों

Night blindness is caused due to the deficiency of:/ रतौंधी किस के अभाव से होता है?

Vitamin A1 / विटामिन A1
Vitamin A2/ विटामिन A2
Vitamin A3/ विटामिन A3
Vitamin A/ विटामिन A


Correct Answer :Vitamin A/ विटामिन A

The Fungal Disease “Red Rot” affects which plant? / फफूंद रोग ''रेड रोट'' कौन से पौधे मे होता है?

Groundnut/ मूंगफ़ली
Sugarcane/ गन्ना
Coffee/ कॉफी
Potato/ आलू


Correct Answer :Sugarcane/ गन्ना

The different colours of different stars are due to the variation of? / विभिन्न तारों के अलग अलग रंग की भिन्नता के कारण हैं?

Pressure/ दबाव
Temperature/ तापमान
Pressure and temperature/ दबाव और तापमान
Surface reactions/ सतह प्रतिक्रिया


Correct Answer :Temperature/तापमान

What is the name of alcohol obtained in the saponification process? / सैपोनीफिकेशन प्रक्रिया में कौन सा अल्कोहल प्राप्त किया जाता है:

Easter/ ईस्टर
Glycerol/ ग्लिसरॉल 
Acetone/ एसीटोन
Mortar/ मोर्टार 


Correct Answer :Glycerol/ ग्लिसरॉल 

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Which gas is fixed by Rhizobium bacteria present in the root nodules of a pea plant ?

Chemistry

The formation of sulphurous acid involves ?

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