CBSE Class 10 Science General Awareness Questions with Answers

CBSE Class 10 Science General Awareness Questions with Answers CBSE Class 10 Science QUESTIONS

CBSE Class 10 Science General Awareness Questions with Answers

61 Sardar Sarovar Dam is situated on river:
A Ganga
B Narmada
C Yamuna
D Godavari

Answer: Narmada
62 A chemical reaction does not involve:
A Formation of new substances having entirely different properties than that of the reactants
B Breaking of old chemical bonds and formation of new chemical bonds
C Rearrangement of the atoms of reactants to form new products
D Changing of the atoms of on element into those of another element to form new products

Answer: Changing of the atoms of on element into those of another element to form new products
63 Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of:
A Lactic acid
B Carbon dioxide
C Hydrochloric acid
D Fat

Answer: Lactic acid
64 The plant hormone which triggers the fall of mature leaves and fruits from the plant body is:
A Abscisic acid
B Cytokinin
C Auxin
D Gibberellin

Answer: Abscisic acid
65 Which of the following is the molecular formula of cyclobutane?
A C4H8
B C4H10
C C4H6
D C4H4

Answer: C4H8
66 The property of self-linkage among identical atoms to form long chain compounds is known as:
A Halogenation
B Catenation
C Isomerisation
D Superposition

Answer: Catenation
67 The I.U.P.A.C name of CH3CH2CH=CH2 is?
A But-1-ene
B Butyne
C 3-Butene
D Prop-1-ene

Answer: But-1-ene
68 Cation is formed when:
A Atom loses electrons
B Atom shares electrons
C Atom gains electrons
D Proton is lost by the atom

Answer: Atom loses electrons
69 While cooking, if the bottom of the vessel is getting blackened on the outside, it means that:
A The fuel is not burning completely
B The fuel is burning completely
C The food is not cooked completely
D The fuel is wet

Answer: The fuel is not burning completely
70 An element X belongs to the 3rd period and 1st group of the periodic table. What is the number of valence electrons in its atom?
A 8
B 1
C 3
D 6

Answer: 1

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