Class XI School Entrance Test 2017 - Mathematics

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Questions and Answers

Which of the following is NOT a general property of gases?

  • Large volume
  • High compressibility
  • High fluidity
  • High density (correct)

Which of the following pairs will NOT show diffusion prominently?

  • Water and Oxygen
  • Salt and Sand (correct)
  • Chlorine and Oxygen
  • Chlorine and Bromine

At what temperature do the readings on Celsius and Fahrenheit thermometers have the same numerical value?

  • 100
  • -40 (correct)
  • 273
  • 0

Which action will most effectively liquefy a gas?

<p>Decreasing temperature and increasing pressure (A)</p> Signup and view all the answers

Which of the following substances undergoes sublimation?

<p>Camphor (B)</p> Signup and view all the answers

Which of the following elements is classified as a non-metal?

<p>Silicon (B)</p> Signup and view all the answers

An emulsion is a colloidal solution formed by mixing which of the following?

<p>Two immiscible liquids (D)</p> Signup and view all the answers

Which of the following substances is a mixture?

<p>Vinegar (A)</p> Signup and view all the answers

Which of the following has a liquid dispersed phase and a gaseous dispersion medium?

<p>Cloud (B)</p> Signup and view all the answers

How many times heavier is an atom of sulfur compared to an atom of carbon?

<p>8/3 (C)</p> Signup and view all the answers

How many moles are present in 60 grams of carbon?

<p>5 (B)</p> Signup and view all the answers

The reaction $CH_2=CH_2 + H_2 \rightarrow CH_3-CH_3$ is an example of what type of reaction?

<p>Addition (B)</p> Signup and view all the answers

A white precipitate is formed when a solution of common salt is added to a solution of which of the following?

<p>$AgNO_3$ (C)</p> Signup and view all the answers

Which acid is typically found in the stomach of a healthy person?

<p>Hydrochloric acid (C)</p> Signup and view all the answers

Which of the following salts, when heated to 100°C, yields Plaster of Paris?

<p>$CaSO_4 \cdot 2H_2O$ (A)</p> Signup and view all the answers

Which element forms an acidic oxide?

<p>C (A)</p> Signup and view all the answers

Which of the following electronic configurations is most likely to represent a metal?

<p>2, 8, 1 (B)</p> Signup and view all the answers

Which of the following molecules contains both single and double bonds?

<p>Ethene (B)</p> Signup and view all the answers

During galvanization, iron is coated with which metal to prevent corrosion?

<p>Zn (A)</p> Signup and view all the answers

Which pair of elements both exhibit the property of catenation?

<p>Carbon and silicon (B)</p> Signup and view all the answers

What is generally true about the volume of a gas at 0°C?

<blockquote> <p>0 (A)</p> </blockquote> Signup and view all the answers

In a laboratory, if concentrated acid accidentally spills on a student's hand, what immediate action should be taken?

<p>Wash the hand immediately with plenty of water and apply a paste of sodium hydrogen carbonate (B)</p> Signup and view all the answers

Element A has an electronic configuration of 2,8,2 and element B has 2,8,7. What is the most likely formula of the compound formed between A and B?

<p>$AB_2$ (B)</p> Signup and view all the answers

What is the correct order of reactivity for the metals Zn, Cu, Fe, and Ag?

<p>Zn &gt; Fe &gt; Cu &gt; Ag (A)</p> Signup and view all the answers

A gas decolorizes alkaline $KMnO_4$ solution but does not give a precipitate with $AgNO_3$. Which of the following gases fits this description?

<p>$C_2H_4$ (D)</p> Signup and view all the answers

What are the original inhabitants of a country commonly called?

<p>Aborigines (A)</p> Signup and view all the answers

Which of the following is a reflexive pronoun?

<p>Himself (C)</p> Signup and view all the answers

What is the correct plural form of the word 'OASIS'?

<p>Oases (D)</p> Signup and view all the answers

Choose the correct preposition to complete the sentence: 'I have been studying in this school __________ the last five years.'

<p>for (D)</p> Signup and view all the answers

Select the grammatically correct sentence from the following options.

<p>Bring me the book that is lying on the table. (C)</p> Signup and view all the answers

Choose the correct verb form to complete the sentence: Neither of them __________ come.

<p>has (A)</p> Signup and view all the answers

Which of the following is the correct spelling?

<p>Pneumonia (D)</p> Signup and view all the answers

Which of the following best completes the sentence: 'The principal _______ our requests.'?

<p>Turned down (C)</p> Signup and view all the answers

What is a place for housing airplanes called?

<p>Hangar (D)</p> Signup and view all the answers

Flashcards

Emulsion

A colloidal solution formed by mixing two immiscible liquids.

Mixture

A substance consisting of two or more components that are physically combined.

Liquid dispersed in gas

A system in which liquid particles are dispersed in a continuous gas phase.

Diffusion

The process by which particles intermingle as a result of their kinetic energy of movement.

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Sublimation

Solid changes directly into a gas without passing through the liquid phase.

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Non-metal

An element that typically lacks metallic attributes.

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Same °C and °F

The temperature at which Celsius and Fahrenheit scales show the same reading.

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Substitution reaction

Reaction where a molecule or ion replaces another atom or group in a molecule

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Addition Reaction

Adding one or more atoms or groups of atoms into a molecule

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Acid

An acid donates hydrogen ions or protons and forms salts with bases

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Electronic Configuration Meaning

The electronic configuration describes the arrangement of electrons

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Single and double bonds

Molecule that contains single and double bonds between its atoms

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Galvanization

Coating iron with zinc

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Catenation

The ability of an element to form long chains

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Electrical resistance

The degree to which a material resists the flow of electric current.

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Electrical Power

The rate at which electrical energy is transferred by an electric circuit

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Ion

An atom or molecule with a net electric charge due to the loss or gain of electrons.

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Covalent Bond

A pair of electrons shared by two atoms.

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Gas Phase

The state of matter in which a substance has no specific shape or volume.

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Sublimation

The direct transition of a substance from the solid to the gas phase.

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Study Notes

  • This is a School Entrance Test for Class XI, specifically for the Mathematics Group, held in 2017.
  • The test booklet number is 43973.

Instructions to Candidate

  • The question booklet contains 100 objective-type questions
  • Candidates must attempt all questions
  • There is no negative marking for incorrect answers
  • No second question booklet or answer sheet will be given under any circumstances
  • Within 10 minutes of receiving the booklet, candidates must check for completeness and report any missing pages to the invigilator
  • Candidates must write their roll number on the cover page and answer sheet in the designated spaces
  • Writing the roll number or name inside the question booklet is prohibited
  • Erasing or overwriting answers on the answer sheet will render the answer incorrect
  • The use of log tables or calculators is not permitted
  • Candidates will not be allowed to enter the examination hall 30 minutes after the exam begins
  • No candidate may leave the examination hall until two hours have elapsed from the start of the test
  • Candidates are prohibited from bringing loose paper into the examination hall, except for the admit card
  • Using unfair means or causing disturbances will lead to expulsion and cancellation of the test
  • Candidates must deposit only the OMR answer sheet at the end of the examination

Chemistry Questions

  • A question asks which of the following is not a general property of gases
  • Another question asks which pair will not show diffusion
  • One question asks the temperature at which Celsius and Fahrenheit readings are the same
  • A question examines the conditions for liquefying a gas
  • A question identifies which substance undergoes sublimation
  • Candidates must also identify the non-metal element from a list
  • One question requires knowing what forms an emulsion
  • Mixture identification is tested
  • Question asks which has a liquid dispersed phase and a gaseous dispersion medium
  • Relative atomic mass determination is tested
  • A question focuses on determining the number of moles of carbon
  • The reaction that describes addition is tested
  • Identifying the precipitate formed by common salt solution is tested
  • The identification of an acid present in the stomach is examined
  • Plaster of Paris formation by heating salt at a certain temperature is assessed
  • Identify which element forms an acidic oxide
  • A question checks the ability to know electronic configuration, and what elements are metal

Assorted General Knowledge Questions

  • Correcting sentences for proper English usage is tested
  • Questions about prepositions are asked
  • Identifying the plural form is an area that a question tests
  • Identifying reflexive pronouns is tested

Assorted Math Questions

  • Questions that examine geometric properties of triangles are tested
  • Questions that asses trigonometric functions and simplification are tested
  • Questions include finding the value for a variable in an equation
  • Questions assess the ability to calculate area change percentage when dimension changes

Language questions

  • Several questions test knowledge of Hindi grammar and vocabulary
  • This includes identifying types of compounds in words (समास)
  • Questions also examine synonyms (पर्यायवाची) and antonyms (विलोमार्थी)

Indian General Knowledge Questions

  • A question asks about the first cashless island in India
  • Questions also ask the current governor of a state in India
  • The questions test the knowledge of the location of an Indian aviation university

Sports Question

  • A question asks which sport a specified sports person is affiliated with

History Question

  • A question asks which city the metro train started in India

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