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AP Intermediate 1st Year Some Basic Concepts of Chemistry — practice questions

Explore 49 free Some Basic Concepts of Chemistry questions in AP Intermediate 1st Year Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Some Basic Concepts of Chemistry questions and exercises with answers

Showing questions 1–30 of 49.

As per your syllabus, Chemistry Ch 1, who proposed the LAW OF CONSERVATION OF MASS in 1789?Read the answer and worked solution →As per your syllabus, who proposed the LAW OF DEFINITE PROPORTIONS — using natural + synthetic cupric carbonate samples to show identical composition?Read the answer and worked solution →As per your syllabus, who proposed the LAW OF MULTIPLE PROPORTIONS in 1803?Read the answer and worked solution →As per your syllabus, who proposed the LAW OF GASEOUS VOLUMES in 1808?Read the answer and worked solution →As per your syllabus, who proposed AVOGADRO'S LAW (1811) — that equal volumes of all gases at the same T and P contain equal numbers of molecules?Read the answer and worked solution →As per your syllabus, the AVOGADRO CONSTANT (N_A) has the approximate value of which?Read the answer and worked solution →As per your syllabus, 1 mole of WATER MOLECULES contains how many water molecules?Read the answer and worked solution →As per your syllabus, what is the MASS PERCENTAGE of oxygen in WATER (H₂O)?Read the answer and worked solution →As per your syllabus, what mass of WATER is produced by the combustion of 16 g of methane (CH₄)?Read the answer and worked solution →As per your syllabus, MOLARITY (M) of a solution is defined as which?Read the answer and worked solution →As per your syllabus, MOLALITY (m) of a solution is defined as which ratio?Read the answer and worked solution →As per your syllabus, mass % (w/w%) is given by which formula?Read the answer and worked solution →The molecular mass of water H$_2$O (using H = 1, O = 16) is:Read the answer and worked solution →One mole of any substance contains:Read the answer and worked solution →NEET · Chemistry · Mole Concept — Gap FillRead the answer and worked solution →NEET · Chemistry · Mole Concept — Calculation OrderRead the answer and worked solution →Homogeneous or notRead the answer and worked solution →Type the chemistry termRead the answer and worked solution →Balance by conservation of massRead the answer and worked solution →Classify the matterRead the answer and worked solution →Pop the SI base unitsRead the answer and worked solution →One word is wrongRead the answer and worked solution →Order the stoichiometry stepsRead the answer and worked solution →Element or compoundRead the answer and worked solution →Which one does not belongRead the answer and worked solution →Pure or mixtureRead the answer and worked solution →Spot the false statementRead the answer and worked solution →Which ones belongRead the answer and worked solution →Knock out the true statementsRead the answer and worked solution →Basic concepts bingoRead the answer and worked solution →

Worked practice questions

As per your syllabus, Chemistry Ch 1, who proposed the LAW OF CONSERVATION OF MASS in 1789?

  1. John Dalton
  2. Avogadro
  3. Joseph Proust
  4. Antoine Lavoisier
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Correct answer: D. Antoine Lavoisier

As per your syllabus, Lavoisier (1789) gave the law of conservation of mass. The other scientists gave other laws.

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As per your syllabus, who proposed the LAW OF DEFINITE PROPORTIONS — using natural + synthetic cupric carbonate samples to show identical composition?

  1. Gay Lussac
  2. John Dalton
  3. Joseph Proust
  4. Antoine Lavoisier
Show answer and solution

Correct answer: C. Joseph Proust

As per your syllabus, Proust gave the law of definite proportions. He worked with cupric carbonate samples.

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As per your syllabus, who proposed the LAW OF MULTIPLE PROPORTIONS in 1803?

  1. Lavoisier
  2. Avogadro
  3. Joseph Proust
  4. John Dalton
Show answer and solution

Correct answer: D. John Dalton

As per your syllabus, Dalton's law of multiple proportions (1803). Different from Proust's law of definite proportions.

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