TET-Ctet-Chemistry-set-94

Chemistry MCQs for all Competitive Exams SET-94
Psychology Multiple Choice Questions

Chemistry Multiple Choice Questions(MCQ)
रसायन विज्ञान बहुविकल्पीय प्रश्न

Welcome to our exclusive collections of chemistry multiple choice questions with answers. All questions are of multiple choice type.In these MCQs sets we are going to share most important questions related to chemistry. These questions are very helpful for those candidates and aspirants who are preparing for the various government and non government exam as well as in interview.
इस पोस्ट में हम रसायन विज्ञान से सम्बंधित कई महत्वपूर्ण बहुविकल्पीय प्रश्न प्रस्तुत कर रहे है , जो कई प्रतियोगी परीक्षाओ में पूछे जाते है. जैसे TET, CTET, JEE, AIPMT, PMT, Police exams ,army exams, CDSE , SBI Clerk , SBIPO, PO, RRB , IBPS PO , PSc, State PSC, Patwari, Samvida, Teacher recruitment test, UPSC, SSC, CGL, SI, CTET, TET, CDS, MAT , SSC 10+2 , CLAT , NIFT , SBI , IBPS Clerk, Vyapam, आदि.

Chemistry MCQs for all Competitive Exams SET-94
रसायन विज्ञान बहुविकल्पीय प्रश्न


Question : 1-10

Question: 1

Gobar gas contains mainly

[A].   methane
[B].   carbon dioxide
[C].   butane
[D].   carbon monoxide


Question: 2

Why hard water does not give lather with soap?

[A].   Hard water contains calcium and magnesium ions, which form precipitate with soap
[B].   Hard water contains sulphate and chloride ions, which form precipitate
[C].   pH of hard water is high
[D].   pH of hard water is less


Question: 3

Which one among the following polymers is used for making bullet-proof material?

[A].   Polyvinyl chloride
[B].   Polystyrene
[C].   Polyethylene
[D].   Polyamide


Question: 4

What is the role of positive catalyst in chemical reaction?

[A].   It increase the rate of reaction
[B].   It decrease the rate of reaction
[C].   It increases the yield of the products
[D].   It provides better purity of the products


Question: 5

Tetraethyl lead is used as

[A].   mosquito repellent
[B].   painkiller
[C].   fire extinguisher
[D].   petrol additive


Question: 6

The rusting of iron nail

[A].   decreases it weight
[B].   increases its weight
[C].   does not affect weight but iron is oxidised
[D].   does not affect weight but iron is reduced


Question: 7

Now does the ‘hypo’ used in photography?

[A].   It acts as a strong reducing agent
[B].   It acts as a strong oxidising agent
[C].   It removes unreacted AgBr in the form of complex
[D].   All of the above


Question: 8

Which one of the following is the metallurgical operation in which a metal is obtained in a fused state?

[A].   Calcination
[B].   Roasting
[C].   Froth floatation
[D].   Smelting


Question: 9

Many communities put salt on their roads after a snowfall, Why?

[A].   To enhance the freezing and hardening of snow
[B].   To control the slipping of vehicles
[C].   To keep the melted snow from refreezing
[D].   None of the above


Question: 10

The most malleable metal is

[A].   Silver
[B].   Gold
[C].   Aluminium
[D].   Sodium





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