Practice Test

Q1) Which of the following is not observed in a homologous series? Give reason for your choice. Show Answer

Q2) Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g. hydrogen. After the formation of four bonds, carbon attains the electronic configuration of Show Answer

Q3) The correct electron dot structure of a water molecule is Show Answer

Q4) Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of Show Answer

Q5) When sodium hydrogen carbonate is added to ethanoic acid a gas evolves. Consider the following statements about the gas evolved.
1) It turns lime water milky
2) It is evolved with a brisk effervescence
3) It has a smell of burning sulphur
4) It is also a by-product of respiration Show Answer

Q6) While cooking, if the bottom of the vessel is getting blackened on the outside, it means that Show Answer

Q7) Directions: In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): Most of the carbon compounds are good conductors of electricity.
Reason (R): They do not dissociate to form ions and remain as molecules. Show Answer

Q8) The chemical properties of which of the following compounds is similar to the butane? Show Answer

Q9) The difference between two consecutive members in a homologous series in alkanes in terms of molecular mass and number of atoms of elements is: Show Answer

Q10) The name and structure of a saturated compound in which 6 carbon atoms are arranged in a ring is: Show Answer

Q11) Which of the following is not the property of a homologous series? Show Answer

Q12) Name the characteristic property of carbon as depicted in the fig. Show Answer

Q13) Carbon forms large number of compounds due to: Show Answer

Q14) Write the name and structure of a saturated compound in which 6 carbon atoms are arranged in a ring. Show Answer

Q15) Give the number of single bonds present in the above mentioned compound Show Answer

Q16) Carbon is: Show Answer

Q17) The compounds A, B and C are: Show Answer

Q18) Unsaturated hydrocarbons undergo _________ reaction. Show Answer

Q19) Which of these statements is correct regarding addition reaction? Show Answer

Q20) The general formula for alkene is: Show Answer

Q21) Choose the correct condition for conversion of ethene to ethane: Show Answer

Q22) Carbon exists in the atmosphere in the form of Show Answer

Q23) Which of the following will contain covalent double bond between its atoms? Show Answer

Q24) Which of the following is the correct representation of electron dot structure of nitrogen? Show Answer

Q25) Which of the following is not the use of graphite? Show Answer

Q26) Which of the following elements does not show tetravalency? Show Answer

Q27) .......is the synthesized organic compound. Show Answer

Q28) Structural Formula of ethyne is Show Answer

Q29) Structural formula of benzene is Show Answer

Q30) Directions: In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): Covalent compounds are conductor of electricity.
Reason (R): The electrons are shared between atoms and no charged particles are present. Show Answer

Q31) Directions: In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): Diamond does not conduct electricity.
Reason (R): Diamond has high refractive index. Show Answer

Q32) Directions: In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): Graphite is slippery to touch.
Reason (R): The various layers of carbon atoms in graphite are held together by weak van der Waals' forces. Show Answer

Q33) Directions: In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): Carbon shows maximum catenation property in the periodic table
Reason (R): Carbon has small size and thus, forms strong C - C bond. Show Answer

Q34) Which of the following contains a double bond? Show Answer

Q35) What is the covalency of nitrogen? Show Answer

Q36) The shared pair of electrons is said to constitute a ..... bond between two hydrogen atoms. Show Answer

Q37) Which of the following is correct about the structure of diamond? Show Answer

Q38) Identify the incorrect statement(s).
I. Diamond is the hardest substance known while graphite is smooth and slippery.
II. Diamond is made up of billions of carbon atoms. Each carbon atom is bonded to four other carbon atoms in a tetrahedral manner to form a giant lattice. All carbon atoms are bonded by strong covalent bonds.
III. Graphite is a poor conductor of electricity unlike other non-metals.
IV. Graphite has a giant covalent structure that is made up of layers of carbon atoms. In each layer, each carbon atom is bonded to three other carbon atoms to form hexagonal rings of carbon atoms. Show Answer

Q39) Which of the following is an example of amorphous form of carbon? Show Answer

Q40) -CHO represents the functional group Show Answer

Q41) A functional group mainly determines the Show Answer

Q42) Solubility of alcohol in water is due to Show Answer

Q43) Artificial flavour for orange is obtained from Show Answer

Q44) Drinking alcohol is very harmful and it ruins the heath."Drinking alcohol" stands for Show Answer

Q45) The ionic part of synthetic detergent is Show Answer

Q46) Which of the following statements about graphite and diamond is true ? Show Answer

Q47) Which of the following is ethanol? Show Answer

Q48) Which of the following contain covalent bond ? Show Answer

Q49) Which amongst the following will conduct electricity ? Show Answer

Q50) The self linkage property (catenation ) is maximum in Show Answer

Q51) Ethane and ethene can be distinguished by Show Answer

Q52) Which of the following statements are usually correct for carbon compounds? These
(i) are good conductors of electricity
(ii) are poor conductor of electricity
(iii) have strong forces of attraction between their molecules
(iv) do not have strong forces of attraction between their molecules Show Answer

Q53) Buckminsterfullerene is an allotropic form of Show Answer

Q54) Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of Show Answer

Q55) Which of the following is the correct representation of electron dot structure of nitrogen? Show Answer

Q56) Chlorine reacts with saturated hydrocarbons at room temperature in the Show Answer

Q57) Ethanol reacts with sodium and forms two products. These are Show Answer

Q58) Vinegar is solution of Show Answer

Q59) Which of the following does not belong to the same homologous series? Show Answer

Q60) Which of the following represents saponification reaction ? Show Answer

Q61) Ethanol reacts with Na metal to form Show Answer

Q62) The alcoholic drinks contain Show Answer

Q63) The blindness and death is caused by consuming adultrated liquor contains. Show Answer

Q64) Directions: In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:

Assertion (A): Methane is simplest saturated hydrocarbon which is major component of natural gas.
Reason (R): Methane belongs to alkene. Show Answer

Q65) Directions: In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:

Assertion (A): Vegetables oils are unsaturated react with hydrogen in presence of nickel to form vegetable ghee.
Reason (R): This reaction is saponification.
Show Answer

Q66) Directions: In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:

Assertion (A): Soaps are 100% biodegradable but do not work well with hard water.
Reason (R): Some detergents are not biodegradable but work well with hard water.
Show Answer

Q67) Buckminster fullerene is an isomer of carbon containing clusters of carbon atom joined together to forms spherical molecules. Show Answer

Q68) The IUPAC name of ethylene is ethyne. Show Answer

Q69) When the oxygen supply is insufficient then fuel burn incompletely producing mainly a blue flame. Show Answer

Q70) The addition of hydrogen to an unsaturated hydrocarbon to produce saturated hydrocarbon is known as hydrogenation. Show Answer