---
title: Which of the following statements most accurately characterises carb… — Electricity at home: switches, plugs,… · tree and pragmatics
description: Which of the following statements most accurately characterises carbon monoxide? Exam question 3 of lesson 14 «Electricity at home: switches, plugs, fuses and alarms» of the technology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's
---

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# Exam question 3 · Electricity at home: switches, plugs, fuses and alarms

<!-- .ven lang=en -->
Which of the following statements most accurately characterises carbon monoxide?

<!-- .vintro -->
**Mova's choice:** option 3 · **The right answer:** option 3 · right ✓ · **What happens:** follow, characteris · **To what, where:** carbon monoxide

<!-- .vabout -->
This is exam question 3 of lesson 14 «Electricity at home: switches, plugs, fuses and alarms» of the technology 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/technology/14-electricity-at-home/#e3).

## The question {#question}

```conllu
# sent_id = question:technology:14-electricity-at-home:e3:1
# text = Which of the following statements most accurately characterises carbon monoxide?
1	Which	which	PRON	WDT	PronType=Rel	8	nsubj	_	_
2	of	of	ADP	IN	_	5	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
4	following	follow	VERB	VBG	VerbForm=Ger	5	amod	_	_
5	statements	statement	NOUN	NNS	Number=Plur	8	obl	_	_
6	most	most	ADV	RBS	Degree=Sup	7	advmod	_	_
7	accurately	accurately	ADV	RB	_	8	advmod	_	_
8	characterises	characteris	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
9	carbon	carbon	NOUN	NN	Number=Sing	10	compound	_	_
10	monoxide	monoxide	NOUN	NN	Number=Sing	8	obj	_	SpaceAfter=No
11	?	?	PUNCT	.	_	8	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **follow** | gerund |  |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |
| 2 | **characteris** | present |  | carbon monoxide |  |  |  | of the following statements; accurately *property* | tree rules |

<!-- .note -->
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 {#o1}

<!-- .ven lang=en -->
A harmless gas with a strong smell of rotten eggs

```conllu
# sent_id = question:technology:14-electricity-at-home:e3:o1:1
# text = A harmless gas with a strong smell of rotten eggs
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	harmless	harmless	ADJ	JJ	Degree=Pos	3	amod	_	_
3	gas	gas	NOUN	NN	Number=Sing	0	root	_	_
4	with	with	ADP	IN	_	7	case	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
6	strong	strong	ADJ	JJ	Degree=Pos	7	amod	_	_
7	smell	smell	NOUN	NN	Number=Sing	3	nmod	_	_
8	of	of	ADP	IN	_	10	case	_	_
9	rotten	rotten	ADJ	JJ	Degree=Pos	10	amod	_	_
10	eggs	egg	NOUN	NNS	Number=Plur	7	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **smell** |  | rotten eggs |  |  |  |  |  | nom smell «cognition intransitive»: of=agent |

### Option 2 {#o2}

<!-- .ven lang=en -->
A visible grey smoke from burning food

```conllu
# sent_id = question:technology:14-electricity-at-home:e3:o2:1
# text = A visible grey smoke from burning food
1	A	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
2	visible	visible	ADJ	JJ	Degree=Pos	4	amod	_	_
3	grey	grey	ADJ	JJ	Degree=Pos	4	amod	_	_
4	smoke	smoke	NOUN	NN	Number=Sing	0	root	_	_
5	from	from	SCONJ	IN	_	6	mark	_	_
6	burning	burn	VERB	VBG	VerbForm=Ger	4	acl	_	_
7	food	food	NOUN	NN	Number=Sing	6	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **burn** | gerund | a visible grey smoke *not said here* | food |  |  |  |  | vn light\_emission-43.1 «NP V NP.theme»: agent=Agent food=Theme |

### Option 3 · ← Mova's choice · ✓ the right answer {#o3}

<!-- .ven lang=en -->
A poisonous gas without colour, odour or taste

```conllu
# sent_id = question:technology:14-electricity-at-home:e3:o3:1
# text = A poisonous gas without colour, odour or taste
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	poisonous	poisonous	ADJ	JJ	Degree=Pos	3	amod	_	_
3	gas	gas	NOUN	NN	Number=Sing	0	root	_	_
4	without	without	ADP	IN	_	5	case	_	_
5	colour	colour	NOUN	NN	Number=Sing	3	nmod	_	SpaceAfter=No
6	,	,	PUNCT	,	_	7	punct	_	_
7	odour	odour	NOUN	NN	Number=Sing	3	conj	_	_
8	or	or	CCONJ	CC	_	9	cc	_	_
9	taste	taste	NOUN	NN	Number=Sing	7	conj	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 4 {#o4}

<!-- .ven lang=en -->
A gas produced only by electric heaters

```conllu
# sent_id = question:technology:14-electricity-at-home:e3:o4:1
# text = A gas produced only by electric heaters
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	gas	gas	NOUN	NN	Number=Sing	0	root	_	_
3	produced	produce	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	2	acl	_	_
4	only	only	ADV	RB	_	3	advmod	_	_
5	by	by	ADP	IN	_	7	case	_	_
6	electric	electric	ADJ	JJ	Degree=Pos	7	amod	_	_
7	heaters	heater	NOUN	NNS	Number=Plur	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **produce** | participle |  | a gas *not said here* |  |  |  | by electric heaters | vn create-26.4 «NP V NP»: agent=Agent |

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**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.

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