1. How the Cast Iron is different from Wrought Iron?
Cast iron have higher carbon content than wrought iron
Cast iron are more ductile compared to wrought iron
Wrought iron is more stable, pure and stronger, compared to cast iron
Select the correct option from the codes given below:(a) 3 Only(b) 1 and 3 Only(c) 2 and 3 Only(d) 1,2 and 32. With reference to the Sound waves, which among the following is / are correct statements?
1. The frequency determines the pitch of a sound, and the amplitude determines the intensity (or loudness)
2. Frequency is proportional to amplitudeSelect the correct option from the codes given below:(a) Only 1(b) Only 2(c) Both 1 & 2(d) Neither 1 nor 2
3. With reference to Big Bang Theory, which of the following statements is/are correct?
In the beginning, all matter forming the universe existed in one place in the form of a “tiny ball” (singular atom) with an unimaginably small volume, infinite temperature and infinite density.2. At the Big Bang the “tiny ball” exploded violently. This led to a huge expansion. It is now generally accepted that the event of big bang took place 4.7 billion years before the present.
Select the correct answer using the code given below.(a) 1 only(b) 2 only(c) Both 1 and 2(d) Neither 1 nor 24. Consider the following statement :1.The nation-wide scheme of the National Child Labour Projects (NCLP) is run Union Ministry of Social Justice amd Empowerment.2.Gurupadswamy Committee dealt with the issue of child labour.Which of the statements given above is/are correct?(a) 1 only (b) 2 only(c) Both 1 and 2 (d) Neither 1 nor 25. A building worth Rs. 133100 is constructed on land worth Rs. 72900. After how many years will the value of both be the same if land appreciates 10% and building depreciates 10% per annum?(a) 3 yrs(b) 4 yrs(c) 5 yrs(d) 5.5 yrsANSWERS1. (b) 2. (a) The frequency determines the pitch of a sound, and the amplitude determines the intensity (or loudness). Pitch and loudness are independent. A sound can be soft and low pitched, soft and high pitched, loud and low pitched, or loud and high pitched; there’s no connection.3. (a) 4. (b) 5. (A)
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