--- title: Identify the term designating a substance whose colour reveals wheth… — Indicators: the red-cabbage rainbow · tree and pragmatics description: Identify the term designating a substance whose colour reveals whether a solution is acidic or alkaline. Exam question 1 of lesson 17 «Indicators: the red-cabbage rainbow» of the chemistry course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mo --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/chemistry/17-indicators-the-red-cabbage-rainbow/e1/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [questions](https://md.mova.elamur.ai/free/en/corpora/questions/) / [Chemistry](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/) / [Indicators: the red-cabbage rainbow](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/17-indicators-the-red-cabbage-rainbow/) / e1 # Exam question 1 · Indicators: the red-cabbage rainbow Identify the term designating a substance whose colour reveals whether a solution is acidic or alkaline. **Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** you, term, colour, solution · **What happens:** identify, designate, reveal, be · **To what, where:** term, substance This is exam question 1 of lesson 17 «Indicators: the red-cabbage rainbow» of the chemistry course of Mova's primary school, asked in stiff, formal language. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/chemistry/17-indicators-the-red-cabbage-rainbow/#e1). ## The question {#question} ```conllu # sent_id = question:chemistry:17-indicators-the-red-cabbage-rainbow:e1:1 # text = Identify the term designating a substance whose colour reveals whether a solution is acidic or alkaline. 1 Identify identify VERB VB Mood=Imp|VerbForm=Fin 0 root _ _ 2 the the DET DT Definite=Def|PronType=Art 3 det _ _ 3 term term NOUN NN Number=Sing 1 obj _ _ 4 designating designate VERB VBG VerbForm=Ger 3 acl _ _ 5 a a DET DT Definite=Ind|PronType=Art 6 det _ _ 6 substance substance NOUN NN Number=Sing 4 obj _ _ 7 whose whose PRON WP$ Poss=Yes|PronType=Rel 8 nmod:poss _ _ 8 colour colour NOUN NN Number=Sing 9 nsubj _ _ 9 reveals reveal VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 6 acl:relcl _ _ 10 whether whether SCONJ IN _ 14 mark _ _ 11 a a DET DT Definite=Ind|PronType=Art 12 det _ _ 12 solution solution NOUN NN Number=Sing 14 nsubj _ _ 13 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 14 cop _ _ 14 acidic acidic ADJ JJ Degree=Pos 9 ccomp _ _ 15 or or CCONJ CC _ 16 cc _ _ 16 alkaline alkaline ADJ JJ Degree=Pos 14 conj _ SpaceAfter=No 17 . . PUNCT . _ 1 punct _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **identify** | imperative | you *not said here* | the term | | | | | vn characterize-29.2-1-1 «NP V NP S\_ING»: agent=Agent term=Theme | | 2 | **designate** | gerund | the term *not said here* | a substance | | | | | vn appoint-29.1 «NP V NP»: agent=Agent substance=Theme | | 3 | **reveal** | present | colour | | | | | | vn characterize-29.2-1-2 «NP V NP»: agent=Agent | | 4 | **is** | present | a solution | | | | | acidic *property* | tree rules | | 5 | **be** | | a solution *not said here* | | | | | | tree rules | One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree. ## The options {#options} ### Option 1 · ← Mova's choice {#o1} A catalyst ```conllu # sent_id = question:chemistry:17-indicators-the-red-cabbage-rainbow:e1:o1:1 # text = A catalyst 1 A a DET DT Definite=Ind|PronType=Art 2 det _ _ 2 catalyst catalyst NOUN NN Number=Sing 0 root _ _ ``` The frames reader finds no event or fact in this sentence. ### Option 2 {#o2} A solvent ```conllu # sent_id = question:chemistry:17-indicators-the-red-cabbage-rainbow:e1:o2:1 # text = A solvent 1 A a DET DT Definite=Ind|PronType=Art 2 det _ _ 2 solvent solvent NOUN NN Number=Sing 0 root _ _ ``` The frames reader finds no event or fact in this sentence. ### Option 3 · ✓ the right answer {#o3} An indicator ```conllu # sent_id = question:chemistry:17-indicators-the-red-cabbage-rainbow:e1:o3:1 # text = An indicator 1 An a DET DT Definite=Ind|PronType=Art 2 det _ _ 2 indicator indicator NOUN NN Number=Sing 0 root _ _ ``` The frames reader finds no event or fact in this sentence. ### Option 4 {#o4} A neutraliser ```conllu # sent_id = question:chemistry:17-indicators-the-red-cabbage-rainbow:e1:o4:1 # text = A neutraliser 1 A a DET DT Definite=Ind|PronType=Art 2 det _ _ 2 neutraliser neutraliser NOUN NN Number=Sing 0 root _ _ ``` The frames reader finds no event or fact in this sentence. **Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License. - ← previous: [Indicators: the red-cabbage rainbow, test 11](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/17-indicators-the-red-cabbage-rainbow/t11/) - next →: [Indicators: the red-cabbage rainbow, exam 2](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/17-indicators-the-red-cabbage-rainbow/e2/) - ↑ back to [Indicators: the red-cabbage rainbow](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/17-indicators-the-red-cabbage-rainbow/)