Test: Variant #5 of the University Scholarship Examination

Vestnik: CAU Scholarship Examination | Mavzudagi savollar: 49 | Fan: Bio+Chem

Test topshirish uchun kiring ← Vestnikka qaytish

To‘g‘ri javob va yechimni ko‘rish uchun kartaga bosing.

🔒 Trenajyor faqat Premium foydalanuvchilar uchun

Premium olish

Mavzu savollari

1

What is the ground-state electron configuration of a neutral Iron (Fe) atom (Z = 26)?

Variantlar: 4

2

Which of the following elements has the largest atomic radius?

Variantlar: 4

3

What is the approximate bond angle in a water (H₂O) molecule?

Variantlar: 4

4

What is the oxidation state of Sulfur in Sulfuric acid (H₂SO₄)?

Variantlar: 4

5

How many moles are present in 44 grams of Carbon Dioxide (CO₂)?

Variantlar: 4

6

In the reaction H₂ + Cl₂ → 2HCl, how many grams of HCl are produced from 2 grams of H₂ reacting with excess Cl₂? (Ar: H=1, Cl=35.5)

Variantlar: 4

7

A solution is prepared by dissolving 5g of NaCl in 95g of water. What is the mass fraction (percentage) of the solute?

Variantlar: 4

8

Which of the following pairs of ions will react to form a white precipitate?

Variantlar: 4

9

Which of the following salts produces a basic solution (pH > 7) when dissolved in water due to hydrolysis?

Variantlar: 4

10

How does increasing the surface area of a solid reactant affect the rate of a chemical reaction?

Variantlar: 4

11

For the equilibrium N₂O₄(g) ⇌ 2NO₂(g), the forward reaction is endothermic. Which change will shift the equilibrium to the right?

Variantlar: 4

12

Which of the following processes is exothermic?

Variantlar: 4

13

What is the characteristic color of Iodine (I₂) vapor?

Variantlar: 4

14

Aluminum (Al) is highly resistant to corrosion in air primarily because:

Variantlar: 4

15

What is the product of the oxidation of Propan-2-ol using acidified Potassium Dichromate?

Variantlar: 4

16

Which reagent is used to test for the presence of starch?

Variantlar: 4

17

Complete combustion of an organic compound containing C, H, and O produces 0.66 g of CO₂ and 0.36 g of H₂O. If the original mass was 0.30...

Variantlar: 4

18

[Olympiad] Calculate the pH of a 0.05 M solution of Ammonia (NH₃). (Kb = 1.8 × 10⁻⁵)

Variantlar: 4

19

[Olympiad] The solubility of BaSO₄ is 1.05 × 10⁻⁵ mol/L. Calculate its solubility product (Ksp).

Variantlar: 4

20

[Olympiad] For a reaction 2A + B → Products, doubling [A] quadruples the rate, and doubling [B] doubles the rate. What is the overall ord...

Variantlar: 4

21

[Olympiad] For a reaction, ΔH = +40 kJ/mol and ΔS = +100 J/mol·K. At what temperature (in Kelvin) does the reaction become spontaneous?

Variantlar: 4

22

[Olympiad] A metal with atomic mass 60 g/mol crystallizes in a simple cubic lattice with edge length 200 pm. Calculate its density (in g/...

Variantlar: 4

23

[Olympiad] Which type of isomerism is shown by the complex [Co(NH₃)₅(NO₂)]Cl₂ and [Co(NH₃)₅(ONO)]Cl₂?

Variantlar: 4

24

[Olympiad] Which of the following molecules is a meso compound?

Variantlar: 4

25

Which organelle is known as the "powerhouse" of the cell because it is the site of aerobic respiration?

Variantlar: 4

26

When a plant cell is placed in a highly concentrated salt solution, the vacuole shrinks and the cell membrane pulls away from the cell wa...

Variantlar: 4

27

Which of the following is the correct procedure for testing a sample for a non-reducing sugar (like sucrose)?

Variantlar: 4

28

How does a pH much higher than the optimum affect an enzyme?

Variantlar: 4

29

Which of the following is a limiting factor for photosynthesis on a warm, cloudy day?

Variantlar: 4

30

Which component of a balanced diet is primarily responsible for preventing constipation?

Variantlar: 4

31

What is meant by "double circulation" in humans?

Variantlar: 4

32

How does high humidity affect the rate of transpiration in plants?

Variantlar: 4

33

Which of the following diseases is caused by the bacterium *Vibrio cholerae*?

Variantlar: 4

34

What is the role of goblet cells in the human respiratory system?

Variantlar: 4

35

Where in a human cell does the majority of ATP production occur during respiration?

Variantlar: 4

36

Which process in the liver involves the removal of the nitrogen-containing part of amino acids to form urea?

Variantlar: 4

37

In the human eye, the process of changing the shape of the lens to focus on near or distant objects is called:

Variantlar: 4

38

Which adaptation is specific to human sperm cells?

Variantlar: 4

39

If a man with blood group O (ii) marries a woman with blood group AB ($I^A I^B$), what are the possible blood groups of their children?

Variantlar: 4

40

What is the biological definition of "excretion"?

Variantlar: 4

41

Which group of plants produces spores for reproduction and has roots, stems, and leaves?

Variantlar: 4

42

In an ecosystem, which organisms occupy the first trophic level?

Variantlar: 4

43

The increase in the concentration of Carbon Dioxide in the atmosphere is primarily contributing to:

Variantlar: 4

44

In industrial fermenters, why is it important to monitor and control the temperature?

Variantlar: 4

45

Which characteristic is typical of wind-pollinated flowers?

Variantlar: 4

46

What is a major function of Testosterone in human males?

Variantlar: 4

47

Which of the following is a mechanical barrier of the human body against pathogens?

Variantlar: 4

48

A sequence of three bases in DNA that codes for a specific amino acid is called a:

Variantlar: 4

49

In the nitrogen cycle, which bacteria convert ammonium ions into nitrates?

Variantlar: 4

📂 To‘plamdagi boshqa mavzular «CAU Scholarship Examination»

Variant #1 of the University Scholarship Examination

Variant #2 of the University Scholarship Examination

Variant #3 of the University Scholarship Examination

Variant #4 of the University Scholarship Examination

Variant #6 of the University Scholarship Examination

Variant #7 of the University Scholarship Examination

📚 Fan bo‘yicha barcha testlar «Bio+Chem»

CAU Scholarship Examination

CAU sample questions

Barcha testlar Bio+Chem →