Question 91
What is the effect on the rate of a chemical reaction when the temperature is increased?Rates and equilibriumRates and equilibriummedium
Select one option to submit your answer.
NECTA Chemistry – Tanzania
AI-generated exam-style practice tailored for Tanzania students.
Practice mode
Answer immediately. If you miss, we show exactly why your selected option is wrong.
Progress: 0/10 correct (0 answered)
Question 92
In the equilibrium reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what happens when the pressure is increased?Rates and equilibriumRates and equilibriumhard
Select one option to submit your answer.
Question 93
Which electronic configuration corresponds to a stable noble gas atom?Atomic structureAtomic structuremedium
Select one option to submit your answer.
Question 94
Which of the following compounds is an example of a saturated hydrocarbon?Organic chemistryOrganic chemistryhard
Select one option to submit your answer.
Question 95
How many moles of molecules are present in 44 g of carbon dioxide (CO2)? (Atomic masses: C=12, O=16)Mole conceptMole concepteasy
Select one option to submit your answer.
Question 96
In an electrochemical cell, which electrode is the site of reduction?ElectrochemistryElectrochemistrymedium
Select one option to submit your answer.
Question 97
Which type of bond is formed between metal atoms in metallic bonding?Chemical bondingChemical bondinghard
Select one option to submit your answer.
Question 98
What is the empirical formula of a compound containing 40% carbon, 6.7% hydrogen, and 53.3% oxygen by mass?Mole conceptMole concepthard
Select one option to submit your answer.
Question 99
How many moles of oxygen gas (O2) are there in 22.4 dm³ at standard temperature and pressure (STP)?Mole conceptMole Concepteasy
Select one option to submit your answer.
Question 100
Which of the following is a characteristic of bases?Acids, bases, saltsAcids and Baseseasy
Select one option to submit your answer.