30 August 2013

Chemistry Mcqs XII [300 MCQS All Chapters] Online Test 4

Friday, August 30, 2013 Posted by No Comments

XII Chemistry Online Mcqs - All Chapters - Online Mcqs Test - 4

Chemistry Online Mcqs Test for class 12, Second Year, According to Karachi Board 300 Online Multiple Choice Questions
Q1. Hydrogen per oxide is used as
Q2. When steam is passed over red hot coke at 1000 degree centigrade a mixture of carbon monoxide and hydrogen gas is produced. it is known as
Q3. Hydrogen is commercially prepared by the thermal decomposition of
Q4. Hydrogen forms salt like hydrides with the elements of
Q5. Hydrogen forms interstitial hydrides with the elements of
Q6. Ionic hydrides are usually
Q7. The hydrides which are good conductors of electricity in the fused state are called
Q8. Covalent hydrides are prepared by the direct action of
Q9. The hydrides formed by the combination of non metals of groups IVA, VA, VIA and VIIA with hydrogen are called
Q10. The atoms of the same element which have the same atomic number but different mass numbers are called
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