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Chemistry Quiz for Competitive Exams

Q1.Out of these which one is the pure element?
इनमें से शुद्ध तत्व कौन सा है?
a. glass
b. cement
c. sodium
d. None of these

Q2.Which out of this has the highest rate of diffusion—
इसमें से किसमें सबसे अधिक प्रसार की दर है-
a. O2
b. CO2
c. NH3
d. N2

Q3.Name the acid present in lemon?
नींबू में मौजूद अम्ल का नाम बताएं?
a. marlic acid
b. citric acid
c. lactic acid
d. tartaric acid

Q4.Aspirin is?
एस्पिरिन है?
a. acetyl salicylic acid /एसिटाइलसैलीसिलिक अम्ल
b. sodium salicylate/सोडियम सैलिसिलेट
c. methyl salicylate/मिथाइल सैलिसाइलेट
d. ethyl salicylate/एथिल सैलिसिलेट

Q5.Which metal is used as a catalyst in the hydrogenation of oils is?
तेलों के हाइड्रोजनीकरण में उत्प्रेरक के रूप में किस धातु का उपयोग किया जाता है?
a. Pb
b. Ni
c. Cu
d. Pt

Q6.Out of this the most malleable metal?
इसमें से सबसे निंदनीय धातु है?
a. platinum
b. silver
c. gold
d. iron

Q7.How weight affected by the rusting of iron?
लोहे के जंग लगने से वजन कितना प्रभावित होता है?
a. Decreases
b. Increases
c. Remains the same
d. Uncertain

Q8.Name the most electropositive elements among the following?
निम्नलिखित में से सबसे अधिक इलेक्ट्रोपोसिटिव तत्वों का नाम बताइए?
a. Cs
b. Ca
c. Na
d. Br

Q9.Out of these which have the maximum number of isotopes?
इनमें से किसकी आइसोटोप की अधिकतम संख्या है?
a. Bromine/ब्रोमिन
b. Aluminum/अल्युमीनियम
c. Polonium/पोलोनियम
d. Carbon/कार्बन

Q10.What is the chemical formula of table salt?
टेबल नमक का रासायनिक सूत्र क्या है?
a. Sodium nitrate/सोडियम नाइट्रेट
b. Ammonium chloride/अमोनियम क्लोराइड
c. Sodium chloride/सोडियम क्लोराइड
d. Calcium chloride/कैल्शियम क्लोराइड

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