Correct Answer: A. Sexual reproduction

Explanation

Sexual reproduction involves the fusion of gametes from two parents, typically a male and a female. In this process, specialized cells called gametes (sperm and egg) are produced through meiosis. The fusion of these gametes during fertilization leads to the formation of a zygote, which develops into a new individual with a combination of genetic traits from both parents.

Explanation

(ii) I. Catalyst increases the rate of the reaction cy cowering activation energy.

II. The rate of reaction increases with increase in temperature because there will be more effective collisions.

(b)(i) CaCO\(_{3(S)}\) \(\to\) CaO\(_{(s)}\) + CO\(_{2(g)}\)

(ii) Molar mass of CaCO\(_2\) = 40 + 12 + 16 x 3 =100

From the equation in b(i) above,

100g of CaCO\(_{(3)}\) produces 22.4 dm\(_3\) of CO\(_2\) at s.t.p

10g of CaCO\(_3\) will produce \(\frac{10 \times 22.4}{100}\)

= 2.24dm\(^3\) of CO\(_2\)

(c)(i) I. Coal is used as fuel

II. Wood charcoal is used for absorbing poisonous gases

Ill. CO\(_2\) is used in the following:

— in fire extinguishers

—manufacture of washing soda by solvay process

— in carbonated drinks.

(ii) I. 2NaNO\(_{3(s)}\) ---> 2NaNO\(_{2(s)}\) + O\(_2\)

II. MgCO\(_{3(s)}\) \(\to\) MgO\(_{(s)}\) + CO\(_{2(g)}\)

(d)(i) CaCO\(_3\) — cement

Ca(HO)\(_2\) — detection of CO\(_2\)

CaCO\(_3\) — liberates CO\(_{2}\) with addition of acid

CaO — hygroscopic

NaOH — deliquescent.

Correct Answer: C. root

Correct Answer: A. constituencies

Correct Answer: A. hasn't she

Correct Answer: A. \(\frac{6}{5}\)

Explanation

\(\sqrt{4x^2 + 1}\) = \(\frac{13x}{6}\)

4x\(^2\) + 1 = \(\frac{169x^2}{36}\)

4 + x\(^2\) = \(\frac{169x^2}{36}\)

cross multiply

169x\(^2\) - 144x\(^2\) = 36

25x\(^2\) = 36

x\(^2\) = \(\frac{36}{25}\)

: x = \(\pm\frac{6}{5}\)

Correct Answer: D. annelides

Correct Answer: A) people

Explanation

The correct answer to this question is Option A: people. This means that the people are the highest authority and have the power to elect their government and hold them accountable for their actions. In a democracy, the government is made up of representatives who are elected by the people and are accountable to them. The people have the power to vote out a government that they feel is not performing well or is not representing their interests.

The other options given, such as legislature and executive, ruling political party, and judiciary, are important parts of a democracy, but they are not the ultimate source of sovereignty. The legislature and executive branches of government are responsible for making and enforcing laws, while the judiciary interprets them. The ruling political party is a group of people who have been elected to represent the people and implement their policies. However, none of these groups have the ultimate power in a democracy.

In summary, the ultimate source of sovereignty in a modern democracy is the people. They have the power to elect their government and hold them accountable for their actions. While other branches of government and political parties may play important roles, they are not the ultimate source of power.

Correct Answer: C. 2\(\theta\)

Correct Answer: A. the price of the goods

Explanation

Luxury goods are products that are not essential but are highly desired and associated with wealthy or rich people. Most luxury goods are bought because of the high price associated with it and to support self-worth and status.