General Science

In general science, electrolysis refers to:

A acid-base indicator red in acid and blue in base
B elements showing intermediate metal/non-metal properties
C chemical decomposition driven by electric current
D vertical column in the periodic table

Which of the following is most closely associated with periodic table?

A Group 17 elements
B positively charged ion
C reaction between acid and base forming salt and usually water
D arrangement of elements by atomic number and recurring properties

In general science, electron refers to:

A temperature at which vapour pressure equals surrounding pressure
B salts of higher fatty acids
C coating iron or steel with zinc
D negatively charged subatomic particle

What is the best description of pH?

A energy barrier associated with a reaction pathway
B measure related to hydrogen-ion activity/concentration
C synthetic polyamide polymer
D fossil fuel consisting mainly of methane

In general science, vinegar refers to:

A loss of electrons or increase in oxidation state
B large molecule made of repeating structural units
C aqueous solution containing acetic acid
D rapid reaction with an oxidant commonly releasing heat

What is the best description of acetic acid?

A ionic compound of cations and anions
B elements generally showing conductivity, malleability and ductility
C ethanoic acid, CH3COOH
D combining capacity of an atom or ion

In general science, metals refers to:

A gain of electrons or decrease in oxidation state
B small molecule that can form a polymer
C elements generally showing conductivity, malleability and ductility
D substance releasing usable energy in combustion or another process

Which of the following is most closely associated with alloy?

A mass of one mole of a substance
B mixture or solid solution of metals or metal with another element
C two or more atoms chemically bonded
D atom or group of atoms carrying net electric charge

Which of the following is most closely associated with steel?

A combination of substances retaining their chemical identities
B iron-based alloy containing carbon
C vertical column in the periodic table
D number of protons plus neutrons

Which statement correctly identifies ammonia?

A NH3, basic nitrogen compound used in fertilisers
B solid fossil fuel formed largely from ancient plant matter
C steel containing sufficient chromium for corrosion resistance
D polymer produced from ethene

Which statement correctly identifies litmus?

A substance dissolved in a solution
B sodium chloride
C sodium hydrogen carbonate, NaHCO3
D acid-base indicator red in acid and blue in base

In general science, element refers to:

A liquid hydrocarbon mixture from geological deposits
B pure substance whose atoms have the same atomic number
C substance changing reaction rate without being consumed overall
D reaction between acid and base forming salt and usually water

Which statement correctly identifies sublimation?

A substance releasing usable energy in combustion or another process
B solid-to-gas change without passing through liquid
C substance accepting H+ or producing OH− in water
D gain of electrons or decrease in oxidation state

What is the best description of Rh factor?

A disorder characterised by chronic high blood glucose
B macronutrient made of amino acids
C blood-group antigen system important in transfusion and pregnancy
D viral disease mainly transmitted by Aedes mosquitoes

Which of the following is most closely associated with ribosome?

A reduced oxygen-carrying capacity of blood, commonly due to low haemoglobin
B Plasmodium infection transmitted by infected female Anopheles mosquitoes
C mineral essential for haemoglobin
D site of protein synthesis

Which statement correctly identifies typhoid?

A organ filtering blood and forming urine
B enteric fever caused by Salmonella Typhi
C vessels carrying blood toward heart
D fluid containing enzymes such as amylase

Which of the following is most closely associated with stomach?

A organ involved in storage and digestion
B substance recognised by immune system and capable of provoking response
C enteric fever caused by Salmonella Typhi
D heart-muscle damage due to inadequate coronary blood supply

Which of the following is most closely associated with glucagon?

A system digesting food and absorbing nutrients
B hormone that raises blood glucose
C tissue specialised for receiving and transmitting signals
D vessels carrying blood away from heart

What is the best description of ribosome?

A fluid containing enzymes such as amylase
B vessels carrying blood toward heart
C site of protein synthesis
D organ filtering blood and forming urine

What is the best description of skeleton?

A energy-releasing metabolism without oxygen as required by the pathway
B major neural pathway between brain and peripheral nervous system
C site of protein synthesis
D framework of bones supporting and protecting body

Which of the following is most closely associated with fertilisation?

A vessels carrying blood away from heart
B tissue specialised for receiving and transmitting signals
C fusion of male and female gametes
D system digesting food and absorbing nutrients

Which of the following is most closely associated with innate immunity?

A allele expressed in simple Mendelian inheritance when no dominant allele masks it
B immediate non-specific defence
C organ enabling exchange between maternal and fetal circulations
D reproduction involving one parent and generally no gamete fusion

In general science, vitamin C refers to:

A hormone associated with fight-or-flight response
B vitamin important for collagen synthesis
C fluid excreted by kidneys containing metabolic wastes
D vitamin important for blood clotting

In general science, antiseptic refers to:

A fusion of male and female gametes
B blood classification based mainly on A/B antigens on red cells
C observable characteristics resulting from genotype and environment
D substance applied to living tissue to reduce microorganisms

Which of the following is most closely associated with white blood cells?

A contractile tissue
B tissue involved in blood-cell production
C molecule carrying hereditary information
D cells involved in immune defence