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Chemistry Quiz for Competitive Exams

Q1.Out of the following which is the Noble Gas?
निम्न में से कौन सी नोबल गैस है?
a. Nitrogen
b. Hydrogen
c. Oxygen
d. Helium

Q2.Which of the following is used to treat Indigestion?
अपच का इलाज करने के लिए निम्न में से किसका उपयोग किया जाता है?
a. Antacid/एंटासिड
b. Antiseptic/एंटीसेप्टिक
c. Analgesic/एनाल्जेसिक
d. Antibiotic/एंटीबायोटिक

Q3.Metals conduct electricity because?
धातुएँ विद्युत का संचालन करती हैं क्योंकि?

a. Because of low melting point/कम गलनांक के कारण
b. Because of high-temperature/उच्च तापमान के कारण
c. free electrons/मुक्त इलेक्ट्रॉन
d. none

Q4.Which substance also gives a blue colour to glass?
कौन सा पदार्थ कांच को एक नीला रंग भी देता है?
a. Manganese oxide/मैंगनीज ऑक्साइड
b. Cobalt oxide/कोबाल्ट ऑक्साइड
c. Chromium oxide/क्रोमियम ऑक्साइड
d. iron oxide/आयरन ऑक्साइड

Q5.Dehydration is?
निर्जलीकरण है?
a. Removal of acid from a molecule/अणु से अम्ल निकालना
b. removal base from a molecule/अणु से क्षार हटाना
c. Removal of water from molecule/अणु से पानी निकालना
d. removal of alkali from molecule/अणु को क्षार से हटाना

Q6.Which is a rare gas?
एक दुर्लभ गैस कौन सी है?
a. monoatomic
b. diatomic
c. tri atomic
d. None of above

Q7.How many different oxides do nitrogen form?
नाइट्रोजन के कितने अलग-अलग ऑक्साइड हैं?
a. two
b. three
c. four
d. five

Q8.All noble gases are?
सभी महान गैसें हैं?
a. Colourless
b. Odourless
c. Colourless and Odourless
d. Light blue

Q9.What is the chemical name of vitamin C?
विटामिन सी का रासायनिक नाम क्या है?
a. Citric acid
b. Ascorbic acid
c. Oxalic acid
d. Nitric acid

Q10.Which element has the lowest melting point in the periodic table?
आवर्त सारणी में किस तत्व में सबसे कम गलनांक होता है?
a. Hg
b. He
c. W
d. Cs

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