Hye korang ! tolong vote jap boleh tak? bagi korang, which platform yg memudahkan korang untuk jawab quiz? sorry for take your time βΊοΈ
Anonymous Poll
71%
poll tele
17%
google form
12%
quizzizz
π«‘3
1. An ecosystem can be described as
Anonymous Quiz
61%
the entire community of species interacting with the abiotic factors in a certain area
16%
all the areas on Earth that are inhabited by living organisms, including the atmosphere and lands
9%
all the living organisms that inhabit a particular area
13%
a group of individuals of the same species living in a particular geographical area
β€1
2. Which level shows the greatest amount of energy flows in an ecosystem ?
Anonymous Quiz
12%
Carnivores
14%
Secondary consumer
39%
Herbivores
34%
Decomposers
4. A food web is formed by
Anonymous Quiz
19%
measuring the total amount of food consumed by different types of organisms.
59%
connecting a number of related food chains.
12%
breaking up the food chains into smaller units.
10%
measuring the amount of food consumed by different individuals of the same species.
4. What does the pyramid shown in the diagram above represent?
Anonymous Quiz
33%
A pyramid of biomass in which fleas and bacteria are living parasitically
19%
A pyramid of number in which fleas and bacteria are living parasitically
22%
A pyramid of energy in which the secondary and tertiary consumers are decomposers
25%
A pyramid of number illustrating a rapid rate of reproduction among consumers
5. The full biotic potential can be reached if ............
Anonymous Quiz
50%
environmental resistance is absent.
8%
ratio of female to male in the population is high.
4%
age at which each individual in the population first reproduces is low.
38%
number of offspring that can be produced by each individual in the population is high.
6. What happens to the energy of a food web at each level?
Anonymous Quiz
15%
All the energy is lost to the environment.
64%
Some of the energy is stored within the organism while the rest is lost to the environment.
9%
All the energy is stored within the organism.
13%
Some of the energy is stored within the organism while the rest is returned to the producer.
7. If the producers in a food chain take in 1000 kcal of energy, how much energy will likely be passed on to the third trophic level?
Anonymous Quiz
29%
About 100 kcal
15%
About 900 kcal
54%
About 10 kcal
2%
About 90 kcal
8. Biotic potential is dependent on the following factors which include
I Age of maturity II Number of offspring born at a time III Frequency of reproductive activity
I Age of maturity II Number of offspring born at a time III Frequency of reproductive activity
Anonymous Quiz
11%
I and III
45%
I, II and III
9%
I and II
34%
II and III
8. All of the members of a particular species that live in one area are called a/an
Anonymous Quiz
56%
population
8%
biome
19%
community
17%
ecosystem
9. Choose the correct pairs of bacteria involved in each steps of nitrogen cycle.
Anonymous Quiz
27%
Denetrification - Nitrosomonas sp.
26%
Nitrogen fixation - Clostridium sp.
27%
Ammonification - Achromobacter sp.
19%
Nitrification - Azotobacter sp.
STUDY MATRIKSπβοΈπΈ
1. An ecosystem can be described as
sorry for the mistakes. the correct answer is β the entire community of species interacting with the abiotic factors in a certain areaβ
π4
Which of the equation correct refer to definition of formation, CH3OH (g).
Anonymous Quiz
58%
C(s) + 2H2(g) + 1/2O2(g) ----> CH3OH (g)
15%
CH3(g) + OH(g) ----> CH3OH (g)
17%
C(s) + H2(g) + OH2(g) ----> CH3OH (g)
10%
C(s) + H4(g) + O(g) ----> CH3OH (g)
Lattice energy :
Energy released when 1 mole of solid ionic compound formed from its gaseous ions. Which of the equation refer for this definition.
Energy released when 1 mole of solid ionic compound formed from its gaseous ions. Which of the equation refer for this definition.
Anonymous Quiz
55%
Na+(g) + Cl-(g) ---------> NaCl (s)
9%
Na+(aq) + Cl-(aq) ---------> Na+Cl- (s)
18%
Na(s) + 1/2 Cl2(g) --------> NaCl (s)
18%
NaCl (s) ----------> Na+(g) + Cl-(g)
Given the enthalpy of formation NO2(g);
1/2N2(g) + O2(g) β NO2(g) , ΞH = +33.0 kJ Calculate enthalpy of combustion, N2(g)
1/2N2(g) + O2(g) β NO2(g) , ΞH = +33.0 kJ Calculate enthalpy of combustion, N2(g)
Anonymous Quiz
34%
ΞH = +66.0 kJ/mol
16%
ΞH = -33.18 kJ/mol
30%
ΞH = +16.5 kJ/mol
20%
ΞH = +33.0 kJ/mol
Which of equation example for the definition:
"The heat release when 1 mol of substance is burned completely in excess oxygen"
"The heat release when 1 mol of substance is burned completely in excess oxygen"
Anonymous Quiz
8%
HCl(aq) + NaOH(aq) β NaCl (aq) + H2O(l)
86%
C2H6(l) + 7/2 O2(g) β 2CO2(g) + 3H2O(l)
4%
C(s) + 2H2(g) β CH4(g)
2%
Cl-(g) β Cl-(aq)
Based on this equation, enthalpy of neutralization must be 1 mol of:
HCl(aq) + KOH(aq) β KCl (aq) + H2O(l)
HCl(aq) + KOH(aq) β KCl (aq) + H2O(l)
Anonymous Quiz
15%
HCl(aq)
8%
KOH(aq)
30%
KCl(aq)
48%
H2O(l)
π1
Which of the following equation not the enthalpy of atomisation:
Anonymous Quiz
24%
Mg(s) β Mg(g)
35%
1/2Cl2(g) β Cl(g)
31%
Al(l) β Al(g)
10%
1/2Br2(l) β Br(g)