This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 17 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 1 mole of Ag reacts completely with 3 moles of HNO3. Calculate the moles of Ag NO3 produced A) 5. B) 3. C) 1. D) 2. Show Answer Correct Answer: C) 1. 2. The number of significant figures in $\pi$ A) 1. B) 2. C) 3. D) Infinite. Show Answer Correct Answer: D) Infinite. 3. 25 $^{0 }$C is A) 250K. B) 273.15 K. C) 298 K. D) 32 F. Show Answer Correct Answer: C) 298 K. 4. The molecular formula for Ammonium carbonate is A) (NH$_{4 }$)$_{2}$CO$_{3}$. B) (NH$_{4}$ )CO$_{3}$. C) (NH$_{4}$ )$_{2}$CO. D) None of the above. Show Answer Correct Answer: A) (NH$_{4 }$)$_{2}$CO$_{3}$. 5. Which is NOT an atomic particle A) Proton. B) Neutron. C) Electron. D) Photon. Show Answer Correct Answer: D) Photon. 6. Which of the following rule is incorrect for signifcant FIgure? A) All zeros between the significant. B) All zero digits are significant . C) Leading zeros which are present to the left of the. D) For a number, without decimal point, the zeros after nonzero digit are not significant. e.g. 65400 has threesignificant figures. Show Answer Correct Answer: B) All zero digits are significant . 7. Sugar formula? A) K$_{2}$CO$_{3}$. B) Na$_{3}$PO$_{4}$. C) C$_{12}$H$_{22}$O$_{11}$. D) None of the above. Show Answer Correct Answer: C) C$_{12}$H$_{22}$O$_{11}$. 8. Calculate the molecular mass of acetone (CH$_{3}$COCH$_{3}$ ) A) 46 g mol$^{-1}$. B) 64 g mol$^{-1}$. C) 58 g mol$^{-1}$. D) 62 g mol$^{-1}$. Show Answer Correct Answer: C) 58 g mol$^{-1}$. 9. Which of these elements has 3 valence electrons A) Aluminum. B) Oxygen. C) Sodium. D) Helium. Show Answer Correct Answer: A) Aluminum. 10. Amu has been replaced by A) Unit. B) Unified mass. C) All the above. D) None of the above. Show Answer Correct Answer: B) Unified mass. 11. Mass of 1 mole particles is known as A) Molar mass. B) Molecular mass. C) Atomic mass. D) None of the above. Show Answer Correct Answer: A) Molar mass. 12. Which of the following statement are true about the formula of dinitrogen monoxide, N$_{2}$O? A) The relative molecular mass is 28. B) One molecule of N$_{2}$O consists of one nitrogen atom and one oxygen atom. C) One mole of N$_{2}$O contains 6.02 x 10$^{23}$ atoms of nitrogen. D) One mole of N$_{2}$O consists of two mole of nitrogen atom and one mole of oxygen atom. Show Answer Correct Answer: D) One mole of N$_{2}$O consists of two mole of nitrogen atom and one mole of oxygen atom. 13. How many moles are are 3.011 x 10$^{22}$ atoms of sodium? A) 0.0500 moles. B) 1.81 x 10$^{46}$ moles. C) 5.00 x 10$^{21}$ moles. D) 5.00 moles. Show Answer Correct Answer: A) 0.0500 moles. 14. Cyclohexanol is dehydrated to cyclohexene on heating with conc H2SO4. The cyclohexene obtained from 100 g cyclohexanol will be(If yield of reaction is 75%) A) 61.5 g. B) 75.0 g. C) 20.0 g. D) 41.0 g. Show Answer Correct Answer: A) 61.5 g. 15. If 6.3 g of NaHCO$_{3}$ are added to 15.0 g of CH$_{3}$COOH solution, the residue is found to weigh 18.0 g. The mass of CO$_{2}$ released in the reaction is:Hint:Law of conservation of mass. A) 7.2 g. B) 3.3 g. C) 20 g. D) 27 g. Show Answer Correct Answer: B) 3.3 g. 16. A bullet of density 5.4g/cm3 and mass 80g is dropped into a 100 ml graduated cylinder containing exactly 50 mL water, To what height will the water level rise in the cylinder A) 14.8 mL. B) 50 mL. C) 64.8 mL. D) 35.2 mL. Show Answer Correct Answer: C) 64.8 mL. 17. A mixture of naphthalene and benzoic acid can be separated by A) Extraction with cold water. B) Sublimation. C) Extraction by hot water. D) Steam distillation. Show Answer Correct Answer: C) Extraction by hot water. 18. Carbocations have ..... shape with positively charged carbon being sp2 hybridised. A) Tetrahedral. B) Trigonal planar. C) Linear. D) None of the above. Show Answer Correct Answer: B) Trigonal planar. 19. Calculate X from the following expression3 moles of hydrogen produces 2 moles of ammonia, then how much of X moles of hydrogen will produce 10 moles of ammonia A) 3/5 moles of hydrogen. B) 10 moles of hydrogen. C) 15 moles of hydrogen. D) None of the above. Show Answer Correct Answer: C) 15 moles of hydrogen. 20. How manyof the following laws need constant temperature and pressure as prime condition to get applicable?1.Law of conservation of mass2.Law of definite proportion3.Law of multiple proportion4.Gay Lussac's Law of gaseous voloume5.Avagadro Law A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 21. $\left(2.5\times10^{-2}\right)-\left(4.8\\times10^{-3}\right)$ A) $20.2\times10^{-3}$. B) $2.02\times10^{-3}$. C) $20.2\times10^{-2}$. D) $2.02\times10^{-2}$. Show Answer Correct Answer: D) $2.02\times10^{-2}$. 22. An electrophile is a Lewis ..... A) Base. B) Acid. C) Radical. D) Anion. Show Answer Correct Answer: B) Acid. 23. An atom of neon has 8 valence electrons. What will an atom of neon MOST likely do to be stable? A) Gain 1 electron. B) Lose 2 electrons. C) Lose 8 electrons. D) Neither gain nor lose any valence electrons. Show Answer Correct Answer: D) Neither gain nor lose any valence electrons. 24. Carboxylic acid +? $\rightarrow$ ester A) Water. B) Alkene. C) Alcohol. D) Alkane. Show Answer Correct Answer: C) Alcohol. 25. One mole is A) Molar mass. B) Molar volume. C) Avagadros number. D) All of these. Show Answer Correct Answer: D) All of these. ← PreviousNext →Related QuizzesClass 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 1Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 2Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 3Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 4Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 5Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 6Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 7Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 8Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 9Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books