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Andhra Pradesh SSC (Class 10) Periodic Classification of Elements — practice questions — page 3

Explore 98 free Periodic Classification of Elements questions in Andhra Pradesh SSC (Class 10) Science and Technology. Open each question or exercise to read its content, reference answers and available explanation.

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Periodic Classification of Elements questions and exercises with answers

Showing questions 61–90 of 98.

NaCl is an example of which bond?Read the answer and worked solution →Methane (CH4) molecule has how many covalent bonds?Read the answer and worked solution →A coordinate bond is one in which:Read the answer and worked solution →Ionic compounds usually have:Read the answer and worked solution →Which of these is a covalent compound?Read the answer and worked solution →Which molecule has a triple bond?Read the answer and worked solution →Which compound shows a double bond?Read the answer and worked solution →Lewis dot structure of HCl shows:Read the answer and worked solution →Hydrogen chloride dissolved in water conducts electricity because:Read the answer and worked solution →Which is NOT a property typical of covalent compounds?Read the answer and worked solution →Which atom acts as the electron-pair donor in a coordinate bond?Read the answer and worked solution →Which compound contains BOTH ionic and covalent bonds?Read the answer and worked solution →Why is the structure of methane tetrahedral?Read the answer and worked solution →The shape of an ammonia (NH3) molecule is:Read the answer and worked solution →CO2 has polar bonds yet is non-polar overall because:Read the answer and worked solution →Which molecule features hydrogen bonding?Read the answer and worked solution →Which property of water is due to hydrogen bonding?Read the answer and worked solution →Why are giant covalent crystals (like diamond) very hard?Read the answer and worked solution →Which is the BEST example of a metallic bond?Read the answer and worked solution →In an electrovalent (ionic) compound MgCl2, magnesium and chlorine ions exist as:Read the answer and worked solution →Upto which element, the Law of Octaves was found to be applicableRead the answer and worked solution →According to Mendeleev's Periodic Law, the elements were arranged in the periodic table in the order ofRead the answer and worked solution →Where would you locate the element with electronic configuration 2,8 in the Modern Periodic Table?Read the answer and worked solution →An element which is an essential constituent of all organic compounds belongs toRead the answer and worked solution →Which of the following is the outermost shell for elements of period 2?Read the answer and worked solution →Which one of the following elements exhibit maximum number of valence electrons?Read the answer and worked solution →Which of the following gives the correct increasing order of the atomic radii of O, F and N?Read the answer and worked solution →Which among the following elements has the largest atomic radii?Read the answer and worked solution →Which of the following elements would lose an electron easily?Read the answer and worked solution →Which of the following elements does not lose an electron easily?Read the answer and worked solution →

Worked practice questions

NaCl is an example of which bond?

  1. Covalent
  2. Hydrogen
  3. Ionic
  4. Coordinate
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Correct answer: C. Ionic

1. Sodium has one valence electron; chlorine has seven. 2. Sodium transfers its electron to chlorine. 3. Na+ and Cl- form, held by electrostatic attraction. 4. So NaCl has an ionic bond. _Source: Selina Concise Chemistry ICSE Class 10, Ch 2 'Chemical Bonding'_

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Methane (CH4) molecule has how many covalent bonds?

  1. Two
  2. Three
  3. Five
  4. Four
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Correct answer: D. Four

1. Carbon has four valence electrons. 2. Each shares with one hydrogen atom. 3. So CH4 has four C-H single covalent bonds. 4. The molecule is tetrahedral. _Source: Selina Concise Chemistry ICSE Class 10, Ch 2 'Chemical Bonding'_

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A coordinate bond is one in which:

  1. Both electrons of the shared pair come from one atom
  2. Electrons are transferred completely
  3. Electrons are shared equally
  4. No electrons are shared under typical conditions
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Correct answer: A. Both electrons of the shared pair come from one atom

1. In a coordinate (dative) bond one atom supplies both bonding electrons. 2. The other atom contributes an empty orbital. 3. Once formed, it behaves like a regular covalent bond. 4. Example: NH4+ has one coordinate bond. _Source: Selina Concise Chemistry ICSE Class 10, Ch 2 'Chemical Bonding'_

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