1 . Which one is not Correct?

• A. A + 0=A
• B. a.1=A
• C. A + A'=1
• D. A.A'=1

Answer: Option D

Explanation:

2 . Which one is not correct? Internet intensive activities are---

• A. facilitating advanced countries
• B. disadvantaging the poorer countries
• C. cutting cost of economic activities
• D. empowering the poorer countries

Answer: Option B

Explanation:

3 .

• A. $K_w=1.0\times {10}^{-14}$
• B. $P^{k_w}=14$
• C. $K=\left[H_3{O}^{+}\right]\left[O{H}^{-}\right]$
• D. $K_w=1.0x{10}^{-14}M$

Answer: Option D

Explanation: